Marine Fish Hatchery

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About us

REDEMAR Hatchery was founded in 2008 by Pedro Antônio dos Santos and Cláudia Kerber. We produce Bijupirá - Cobia (Rachycentron canadum, Cobia) and Garoupa - Dusky Grouper (Epinephelus marginatus).

The laboratory takes 2.000m² on the coast of Ilhabela/SP, four hours by car from the International Airport of Guarulhos. The prime location of the laboratory, in between the axis Rio – São Paulo, not only favors the shipping to the farms, but also provides excellent water quality.

Dusky Grouper and Cobia fingerlings can adapt in different rearing systems, in large or small scale, in all Brazilian coast as well as in other countries.

Throughout those 12 years of existence, several good professionals and partners have granted the growth of the company.

Claudia Ehlers Kerber DVM, MSc - Production Manager, master in Physiology; Veterinary specialized in marine fish.

Our Team


Partner enterprises

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Know more about our breeders



Production Systems

Redemar produces marine fish for different rearing systems


Gaiolas Off Shore

Sponsored by a PIPE (Small Enterprise Innovation Program) from FAPESP (Research Support Foundation of São Paulo State) we are improving the knowledge about the production of grouper fingerlings in high densities in RAS. We have already reached a density of 30 Kg/m³ but our goal is increase to > 60 kg/m³. The increased density positively affects the economic viability of the fish production in RAS systems, as well as the sale price. The grouper production in RAS is an excellent choice once it can be installed anywhere, even far from the sea.

The Recirculating Aquaculture System (RAS) is a method where the water from the rearing system is continually treated and reused. RAS allows the production with the total or partial water reusing, shortening the quantity of water used in a productive cycle.
Source: Aquaculture Brasil


Gaiolas Off Shore

The Grouper has already proved its viability in ponds. This grow out system is very common in Southeast Asia associated or not with Tilapia or shrimp.


Gaiolas Off Shore

It is a rearing process in large floating or submerged cages in the open sea. Perfect for rearing up Cobia!
In floating or submerged cages in places with good circulation and clear water, Cobia exhibits its best performance, growing up to 6 kilos in a year!


Redemar takes part of an European net of aquaculture research, the BluEco Net, which understands the Integrated Multitrophic Aquaculture (IMTA) as the best option to the sustainable development of the activity.

The IMTA is a production system that integrates species from different trophic levels in the same rearing environment, resulting in the conversion of the waste of one species in food source or fertilizer to another species.
Source: Aquaculture Brasil

In Shore Floating Cages

Gaiolas In Shore

The Grouper has good adaptation in sea cages once they’re located next to the shore in sheltered places under weak marine currents.


The use of the system with BIOFLOC technology grants the advantage of not using multiple external filtration systems, once processes arising from microorganisms that transform the most toxic nitrogen composts (ammonia and nitrite) into less toxic composts (nitrate) are made in the water.

Until now used in shrimp farming, REDEMAR, in partnership with UDESC, has done studies to verify the adaptation of the Dusky Grouper to this system.


Redemar offers fingerlings of Dusky Groupers for restocking programs where it has already been extinct or where its population is in danger.

Supported by Fundação Grupo Boticario de Proteção à Natureza, ATEVI (Terra Viva Environmental Association) has been repopulating the coast of Ilhabela in the state of Sao Paulo.

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We are open for new partnerships with companies that share our philosophy.


All forms to contact us

Rua dos Eucaliptos, 208
Ilhabela SP
CEP 11630-000

+55 (12) 9 8124-9903

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