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Breeding Aphanius species



Aphanius species are a challenge to breed, at least from my experience. A 
major problem is that females are often killed by the male if they are not 
ready to spawn. To prevent this, it is necessary to feed the fish often and 
abundantly to keep the female in spawning condition. Separation of male and 
female from time to time is wise. I have found they breed best in groups. 
Bacterial infections are commom with this genus and the water needs to be 
chanced weekly- at least 30%. They do well in hard water, add some salt if 
your water if soft- 1 teaspoon per gallon. This is an interesting genus but 
few quarists have long-term success for a variety of reasons.

Roger Langton