Fish Species for Your Aquarium

Fact sheets for popular aquarium fish with the key facts on tank size, water parameters, and tank mates — compact and to the point.

Colorful, easy to care for, and remarkably prolific — the classic beginner fish for hard water.

The best-selling aquarium fish worldwide — needs soft, acidic water and a school of 10+.

Striking cichlid with a predatory streak — needs plenty of room and carefully chosen tank mates.

Low-maintenance, helpful algae eater — adaptable and usually easy to combine with other species.

Vividly colored dwarf cichlids with fascinating breeding behavior — never multiple males together.

Spectacular fins, clear rules — males must be kept singly, lid required.