Instructions
Place the male and female wolf fish into your aquarium. While it is difficult to differentiate between the sexes, males are slightly longer and more slender than females. The males also are usually darker in color.
Watch for a pile of eggs to appear in the aquarium's cave. The female will deposit hundreds --- if not thousands --- of eggs. The male will guard the nest and the newly hatched baby fish (also known as fry).
Remove the female and place her into a separate aquarium to prevent the male wolf fish from attacking her after she lays her eggs.
Feed the fry newly hatched brine shrimp once a day when they are free-swimming.
How to Breed Wolf Fish
The wolf fish (Hoplias malabaricus) is a freshwater species from South America. It can grow to more than 1 foot in length and has a mouthful of sharp teeth. While it generally lurks in the tank's shadows, do not underestimate its predatory nature. This aggressive species requires a large tank --- at least 100 gallons. You should design a cave in your tank for breeding purposes. This should be large enough so the fish can turn around in it.