–work in progress–
This information is gathered from several sources.
As I live in Belgium, we have “cold” winters (everything is relative!) with worst around -5 / -10 °C. Summers get relatively hot with temperatures between 25-35.
Plate size means 350-450g.
So, there are some fish that are suitable I think:
Grass carp
Normal density: 40/1000L
Intensive: 60/1000L (needs air pump)
Temperature: 0-38°C (best growth between 25-30)
Feed: vegetarian possible
Harvest size: 500-600g
Time to maturity (ideally): 10 months
pH level: 7.5 – 8.0
oxygen: 5+ mg/L (can even survive at 1 mg/L!)
Rainbow trout
Normal density: 20-40/1000L
Intensive: 60/1000L (needs air pump)
Density: 10-20 kg / 1m³
Temperature: best between 15-18°C, not good above 23°C. Above 20°C it needs extra oxygen. (not very suitable for greenhouses)
Feed: carnivorous
Oxygen: 7mg/L
Pro:
– quick grow rate (plate size in 9 months)
– high food digestion ratio (fast food to fertilizer)
– good taste
Con:
– can not sustain too much ammonia and nitrite
– predators, so keep them all the same size. Can’t mix a fish of 1 year with one of 2 year.
– too few fish will make 1 dominant while the rest wither and potentially die.
Male: sexual mature after 1 year, females mature after 2 years. If you don’t remove the eggs, they might rot in the body and the female get sick.
Tilapia
Temperature: 21-29°C
Feed: sinking fish food rich in proteins (Flake fish food, bloodworms)
Catfish
Temperature: (depends on species) 20-24°C
Pro: keeps algae under control
Con: stressed by larger fish
Feed: sinking food, likes to feed at night
Silver Perch
Temperature: 23-28°C
Pro/Con: Can grow to 8kg (600mm in length)
Feed: vegetarian
Con: slow growth rate (plate size in 3-4 years)
Jade Perch
Temperature: 20-28°C
Feed: omnivore (low in animal protein)
Murray Cod
Temperature: 8-24°C
Attention: quick growing fish (needs space!)
Feed: carnivorous — need to be fed often or they start to eat each other. Diet rich in protein & phosphorus
Con: cannot live together with smaller fish as these would be eaten.
Barramundi
Temperature: 26-30°C
Feed: carnivorous
Con: like to eat other fish and crustaceans
Trout
Bluegill
Temperature: 16-27°C
Feed: can eat anything, but prefer high protein
Sources
- https://rgjaquaponics.weebly.com/carp.html
- https://aquaponics.info/fish/carp/
- https://www.youtube.com/watch?v=ZTzpGREDlfU
- https://www.youtube.com/watch?v=3ULtyZrOXU4