ProTerra Maroc

Cichlid, algae and Salicornia from the desert

Proven agricultural eco-cycle system intelligently applied and smartly implemented

Pro Terra Maroc stands for sustainable aquaculture and regenerative agriculture. We farm African tilapia in an ideal climate in Morocco and integrate fish and plant farming by replicating natural food cycles. In this way, we are doing our part to meet the growing protein needs of the world's population.

The impact of our farm


we can feed with a farm with proteins from fish and algae.

0 t
Fish p.a.

that is 165,000 fish fillets and other products every day.

0 t

we save through our sustainable food production. As much as a forest of 8 million beech trees binds in one year.*

*How many trees does it take to sequester one ton of CO2? (n.d.). co2online.
100000 L

of fresh water compared conventional inland plants - whether aquaculture, pond farming or cattle farms.

0 ha

our farm is the size of 210 soccer fields. Former desert area, which we green and use for agriculture.

ProTerra Maroc helps close the protein gap

So that natural food, sustainably produced, becomes a matter of course for everyone

The world's population is rising steadily, and with it the demand for food. In addition changepeople are changing their eating and are consuming more protein. Experts predict that demand for food will increase by more than 50 percent by 2050, and demand for animal protein by as much as 70 percent.

If we practiced our agriculture with current methods and forms of processing, the worldwide undersupply of humanity with protein - an essential component of a balanced diet - would begin as early as 2028. In addition, we as a human race would no longer be able to no longer be able to develop sufficient additional arable land. We are forced to reinvent our food production. Otherwise, the protein shortage will be followed by a nutrition crisis.

New approaches to food production, like that of Pro Terra Maroc, are in demand. This is how we help meet the increasing protein needs of all of us a little more - our daily drive. We depend only on seawater, sun and climate - we are just "really green".

Covering the protein needs of mankind

Proven agricultural eco-loop system smartly designed and consistently implemented

We grow African tilapia (Tilapia) in the Moroccan desert at during the year constantly warmn temperatures - about 25 degrees - on. The temperatures following steps cultivated plants feed we to our fish. With it closes closes the cycle of our Polyculture. Or in a sentence: We form the natural food cycle According to.

Cycle representation of polyculture from fish, algae and agriculture.

Chained three-stage polyculture:

  1. Stage: Using renewable energy, we pump saltwater into flow-optimized fish tanks without further treatment. There, the young fish (fingerlings, African cichlids) bred in our own hatchery grow into ready-to-catch fish - all in natural stocking densities for stress-free growth.
  2. Stage: The nutrient-rich process water from the fish is fed into the subsequent algae tanks. The algae filter these nutrients out of the water and convert them into rapid growth. 
  3. Stage: Plants in the desert soil are specifically irrigated with the process water from the algae. The algae and plants (salicornia) act as biofilters, absorbing almost all the ingredients of the two previous value-adding stages. The little liquid that the plants do not absorb seeps into the desert sand and flows back into the sea. Our own plants and algae are harvested, dried, mixed into fish food and fed to our tilapias. They love these delicacies. Thus the cycle is closed.

Pro Terra Maroc raises its fish in tanks with natural salt water from the sea. In this medium multiply viruses and bacteria usually do not. The basinn stand iseparated from the environment andseparated and from the the risk of entry of pests from the outside protected. This means that we will only have to use antibiotics and pesticides in the smallest quantities in exceptional cases.

With the cultivation of salicornia and other plants we renaturalize the centuries fallow for centuries desert soil. As the number of cultivation cycles increases, the formation of humus will to fertile arable land enrich, according to experts.

The adult fish are processed by experienced local fish filleting service providers. Part of the fish fillets is sold fresh locally, the rest of the yield goes to Europe and North America as frozen goods.

First impression of our farm in Dakhla, Morocco

On 150 hectares Pro Terra cultivates Maroc a farm that will produce a total of 24,000 tons of African tilapia as food fish and 576 tons of microalgae after completion - without any negative impact on the local ecosystems.

Consistent temperatures and naturally tempered seawater, ensure low energy consumption, which is covered by our own photovoltaic system. Fresh water is only needed in small quantities. It is produced in a sustainable osmosis plant and with solar energy. obtained.

Plan concept of the farm (complete structure)

Stylized overview of the finished ProTerra Maroc Farm

Further farms of the same design are being planned. Potential sites have already been identified.

Our products


As a native species, cichlids are considered hardy herbivores that thrive in saltwater. 

It is already impossible to imagine the USA without the tilapia as a popular food fish, and it is also gaining popularity in Europe thanks to its firm protein-rich meat.


Microalgae (e.g. spirulina) are known as food supplements and are gaining more and more recognition as an alternative to animal protein. From part of the microalgae harvest and other plant products of the farm, Pro Terra Maroc produces its own fish feed, which in turn is used in fish farming.


Salicornia, also called sea asparagus, is a crunchy slightly salty vegetable that is particularly popular with fish in coastal regions. As a halophyte - a plant that thrives in saline soils - it is also native to the Moroccan desert and makes an excellent addition to our polyculture. 

Pro Terra Maroc operates its own fish hatchery

Pro Terra Maroc runs its own hatchery and has the exclusive right to breed a cichlid strain in Africa.
Our breeding male "Spunk

The cultured juveniles grow to market maturity in 7-9 months in the polyculture tanks.

The animals are kept in low stocking densities. The use of chemicals and hormones is avoided and antibiotics are not administered prophylactically.

Innovative sensors in the tanks measure the water quality around the clock and provide information about fish behavior and health.

Breeding tank in the ProTerra fish breeding station
Tank for breeding pairs in Pro Terra fish breeding station

With your investment you enable approx. 300 thousand people to eat a balanced and complete protein from fish and algae.

- Without overfishing our oceans or overfertilizing our waters through nitrate inputs.

With your investment you enable approx. 300 thousand people to eat a balanced and complete protein from fish and algae.

- Without overfishing our oceans or overfertilizing our waters through nitrate inputs.

The genesis - a visionary project consistently implemented

The genesis - a visionary project consistently implemented


clean & green holdings, as a management and investment company,- takes over a majority stake in Pro Terra Maroc. The experienced managers and entrepreneurs Björn Heyden and Marc Wenger support the team of Pro Terra Maroc under the leadership of founder Michael Wielage in strategy, business management and financing. The common goal: sustainable food production for the future.

2021/ 2022

In the year 2019 our sustainable polyculture successfully tested. With the test results ,the concept will be further optimized and prepared for implementation inthe following months. In the year 2022 begins the construction of the tank and water treatment system for the cichlidbreeding. A 15,000 m3 water reservoir will also be built. Based on the cultivation of its own garden and the planting of Salicornia-fields, the own feed production is started. The cichlid breeding is put into operation.


At the beginning of 2023, the first of twelve similar modules for fish and algae breeding will be built. Each module consists of five large tanks. The supply contracts with the suppliers have been signed and all permits for construction have been obtained.

To date, almost 4 million euros have been raised from impact investors, the founding team and the clean & green managers. As a result, 68% of the necessary investments for the first module have already been financed and much of the preparatory work for the first standard module and the further expansion of the farm (general water supply, buildings, preparation of the fields) has been completed.

The remaining amount for the investments of the first module will be collected with the help of a crowd-investing campaign on the Conda platform.

Development of the key business indicators of the 1st module Pro Terra Maroc 2021 - 2029 (€)

Development of the key business indicators of the 1st module Pro Terra Maroc 2021 - 2029 (€)

The construction of a farm is capital intensive with the purchase and construction of basins and technology, as well as the preparation of the subsoil. The investment for this work is 4.5 million € for the 1st module. After the investment of the in the crowdInvesting-campaign, we will be able we will be able to put our first standard module into operation.

Another 11 of these standard modules are still planned at this location for implementation in subsequent years.

After a construction of this first module, we will be able to catch and sell about 500 t of tilapia this year. In the next few years, this quantity from this module will increase to 2,000 t annually. Conservatively calculated, this results in a turnover of € 1.75 million this year to € 7 million in regular operation. Once production has ramped up, we expect this to be as early as 2024, which means that the profit for the 1st module will grow by around 40% per year in the period 2023 - 2029, the term of the subordinated loan. If the commissioning of the module, its operation and the marketing of the catch proceeds according to plan, we expect the return of the funds to be raised in this crowdfunding campaign already by the end of 2024 (payback period approx. 18 months).

Operating funds for subsequent generations of fish can be financed from the net cash inflow from the sale of the catch.

ProTerra - sustainable. ecological. fair.

Sustainable fish and plant production: ProTerra Maroc sets standards in terms of the environment, animal welfare and health

Water quality

  • fresh salt water
  • constant water exchange & water treatment
  • Targeted flow for optimum oxygen supply

Optimal climate

  • constant temperatures offer best keeping conditions all year round - fish tanks hardly need to be heated
  • sustainable operation of the farm with solar energy

Greening the desert

  • Renaturation of fallow desert areas
  • Cultivation of native species & crops

Animal welfare and health

  • natural stocking of fish in basin
  • Antibiotic administration only in case of medical exceptions
  • no use of hormones 

Protecting the world's oceans

  • No overfishing
  • no introduction of parasites & diseases
  • no unnecessary bycatch
  • Contribution to the preservation of biodiversity

Own feed production

  • Production of high quality fish feed from fish scraps and plant products from the farm.
  • Independent of feed suppliers
  • Abandonment of fish meal

Support for local communities through trained staff

We promote the career development of our employees in relevant professions while supporting rural communities by creating jobs that contribute to sustainable and self-determined living.

Evaluation criteria at a glance

Unique selling proposition

Pro Terra Maroc has reinvented the process for raising fish (differentiators from conventional inland aquaculture):

  • Polyculture cichlid fish farm on the coast of Morocco
  • Sustainable, species-appropriate rearing of fish without preventively administered antibiotics and other chemicals
  • Cost leadership
  • Scalable, modular system - polyculture with high capacity for fresh fish production, modules in standard design, use of modules for further applications
  • Location advantage - Optimal climate with consistently mild temperatures, abundant wind, many sunny days, high light intensity, favorable land rents.
  • Utilization of fallow desert areas
  • No drinking water consumption
  • Positive eco-balance - no emissions, no pollution of seawater, binding of CO2, utilization of the entire bio-mass, self-generated, regenerative energy
  • Own breeding and feed production from own plants - completely without fish meal from sea catch or sea aquaculture
Business model

Breeding, filleting and selling fish and algae

Pro Terra Maroc has holistically rethought how fish are raised on land:

  • Sustainable production of high quality food
  • Independence from suppliers as well as cost leadership - Ideal climate, very low energy consumption and own feed production
  • Accelerated growth via natural effect chains - Symbiotic coexistence of animals and plants
  • Stress-free growing up due to natural stocking densities
  • Targeted use of technology
  • Regenerative agriculture, renaturation of the desert soil
  • Sustainable production (certification planned)
  • AI based control
  • Organic certified (planned)
  • Support of the 13 out of 17 SDG goals of the UN (Sustainable Development Goals)
  • Positive CO2 balance, resource efficient
  • Attractive risk/return profile
Marketing and sales targets
  • Well-established foodstuff and form of presentation (frozen fillets) accepted by the end consumer worldwide.
  • Wide-area distribution through the use of renowned retail chains with stationary retail outlets
  • Target groups: consciously eating price-sensitive end consumers in Europe and the USA
  • Product:
  • Short-term: Frozen fresh fish as organic private label (private label).
  • From 3rd year: building a brand
  • Distribution channels conventional food retailing
  • Marketing (pull strategy)
  • Sales planning:
  • 1st year: 500 t, 2nd year and following year: 2,000 t
Market situation
  • Market Characteristics:
  • Demand for fish will follow the upward trend of recent years and continue to grow - growing by more than 13% from 2022-2030 (Source: European Commission, The EU Fish Market 2022, November 2022).
  • Half of fish will soon come from aquaculture. Aquaculture volume up 15% since 2015. (Source: FAO. 2020. the State of World Fisheries and Aquaculture 2020. sustainability in action. Rome)
  • Frozen fresh fish as a well-established product in mature markets with high end-user acceptance fresh and proven - forecast to grow at a CAGR of 3.07% from 2023-2028 (European frozen fish market growth, source: IMARC)
  • Tilapia is a popular food fish (National Fisheries Institute USA)
  • Profiteer of food mega-trends - sustainability, quality as a purchasing decision, location advantageousness of production (Source: Zukunftsinstitut Frankfurt)
  • Highly profitable business model even when products are sold to wholesalers for private label sales
  • High market entry barriers
  • Clean & Green Holdings GmbH (Issuer) - Managing Partners Björn Heyden and Marc Wenger
  • Pro Terra Maroc S.a.r.l. (subsidiary, first portfolio company) - managing partners Michael Wielage and Dr. Michael Herbert with a total equity share of 49%, Clean & Green Holdings GmbH with the management majority at 51% equity share
  • Operationally experienced managers with a total of more than 100 years of management experience in mechanical engineering, plant construction, basic industries, services
  • Bold, savvy entrepreneurs from mid-sized companies and startups.
  • Developers and implementers of sustainable business ideas
  • Many years of fish farming and distribution experience
  • Broad, resilient network in fish distribution and farming
  • Targeted combination of European and African experts

Land-based aquaculture In the future, land-based aquaculture will grow fastest in volume and share vs. fishing and marine aquaculture. grow.

- You profit with your investment in this future market.

Land-based aquaculture In the future, land-based aquaculture will grow fastest in volume and share vs. fishing and marine aquaculture. grow.

- You profit with your investment in this future market.

Pro Terra Maroc - its contribution to the UN Sustainable Development Goals (SDGs)

We are currently focusing on these UN Sustainable Development Goals (SDGs):

UN Development Goal Number 2 - No Hunger

Food Supply & Supply Chains

  • Supply of natural food in harmony with nature and the environment
  • Affordable food


UN Development Goal number 3 - Health and well-being

Health & Wellbeing

  • Natural, fresh, healthy food without the systematic use of antibiotics and pesticides.
  • Balanced diet with all the essential building blocks for humans


UN Development Goal number 6 - clean water and sanitation

Clean water & sanitation

  • Multiple use of water
  • Use of all organic and inorganic ingredients


UN Development Goal Number 8 - Decent Work and Economic Growth

Decent Work & Economic Growth

  • Involvement of local employees and companies in the development and operation of the portfolio company
  • Fair wages and working environment


UN Development Goal number 12 - sustainable consumption and production

Sustainable production

  • Sustainable, regenerative management with efficient use of natural resources
  • Circular economy
  • No overfertilization of cultivated land and sea


UN development goal number 13 - Climate protection measures

Climate protection measures

  • Use of renewable energy, reduced consumption
  • Renaturation and positivecarbon footprint


additional target contribution

UN development goal number 1 - no poverty
UN Development Goal Number 4 - Quality Education
UN Development Goal Number 5 - Gender Equality
UN Development Goal Number 7 - Affordable and Clean Energy
UN Development Goal Number 9 - Industry, Innovation and Infrastructure
UN development goal number 10 - fewer inequalities
UN Development Goal Number 15 - Life on Land

Security for your investment

Novel business idea with growth perspective
Polyculture from 3 proven breeding and farming methods.
Consistent risk reduction of the business concept
Successful outdoor test of polyculture
Concurrent interests of investors and clean & green
Clean & green has already raised more than € 3 million - from experienced impact investors and personally
Your individual risk-appropriate investment portfolio.
Yield of 14% p.a. possible with risk comparable to an investment in farmland
Digital subscription of your shareholding with minimal effort
Digital drawing is already possible today
Efficient structures of the holding company
No one-time or recurring fees charged to you
Clean & green Managing Director Björn Heyden


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Let's exchange.

If you have any questions, please do not hesitate to contact our managing director Björn Heyden.