Ive bought one of those before at pet smart the sold it to me as a black belt its a type of veja i forgot the name i was told it was, mine grew to 6inches and had coloring almost like a blackbelt but had red specks on its fin when it got older it eventually died from my arowana trying to eat it, thats also how i lost my trimac and male festae both 6inches. i learned unless there really aggressive dont put them in with my arowana he will try to eat them