Black Molly

Poecilia species.
Molly is an algae eating fish, but not the best in my experience. It will eat the soft Hair algae, but that is it, as far as I know. Since most fish will eat this type of algae I don't find necessary keeping this fish as an algae eater. For example, my Scalare did eat Hair algae also, and it would be funny me suggesting an Angel fish for an algae eating crew :-)

However Molly males have a large dorsal fin and a gonopodium. They grow up to 7 cm, need 7.5 pH and temperature around 27'C.
Photo by Dusko Bojic