Hexagonal dinosaur fish and goldfish can't be mixed together. First of all, their personalities are different. Goldfish's personality is mild, but hexagonal dinosaur fish's personality is very aggressive. If there are other fish in the fish tank, they will keep attacking, resulting in injury and death of goldfish. In addition, the gills of hexagonal dinosaurs look like red worms, and goldfish are likely to chew their gill tentacles as food. There is also their different habits. Hexagonal dinosaur fish like to live in a warm environment and like higher water temperature. Goldfish are cold water fish and cannot grow in high temperature.

Hexagonal dinosaur fish can be mixed with Thai tiger fish, thunder dragon fish, pineapple fish, crown three fish, map fish, etc. These kinds of fish are medium-sized fish with lively and fierce personality. And hexagonal dinosaur fish together, can be equally divided, not too much casualties. Like pineapple fish and crown fish, they are fishes with strong adaptability and recovery ability. Even if they are injured, they can recover quickly, and generally they will not die or deteriorate. Thai tiger fish and Lei Arowana are big and fierce fish, and hexagonal dinosaur fish dare not attack easily, so it is more appropriate to mix together.