Tropical Fish: aggressive

Aggressive fish are those that are most likely to be aggressive toward other fish. I do not recommend keeping aggressive fish with other less-aggressive fish at all - no matter how big the tank. Aggressive fish tend to be very territorial and destructive to their environment.

Examples of aggressive fish include piranhas, african and south american cichlids (oscar, jack dempsey or texas cichlids). (click on the name of the fish to see what it looks like)