sharks
Hello,
My name is Bill, I am a 45 year old aquarist and breeder. Back in the 1970's, while still a teenager I was interested in breeding red tail sharks. Not rainbow sharks, but the similar red tail. I had great success and bred 4 pairs with regularity and sold the young.
I would imagine their natural breeding behaviors are the same. Nowadays the rainbow sharks are bred artificailly by injection of gonadatrophic hormones to produce ova and sperm. Females of both species are easy to spot when they are healthy fed adults.
The females are of course, much fatter and less colorful than the slim males. When injected with harmones the females are easily separated from the males and from then on it is a matter of keeping proven males and females in different tanks.
I would like to see your student achieve spawning without hormone injection, I did it with the red tails and I found it easy. Bill
