you could get almost whatever u want in that tank. 75 is a nice tank. you could get any parachromis (with the exception of the dovii), green terror, Oscars, dempseys, texas,red devil, purple rose queen. you could get a Cuban, mayan,beani,red terror(tight squeeze but do-able),grammodes,istanlum . its endless ther are LOADS of awesome fish available for that tank.