Angelfish

Angelfish need a tall tank - at least 29 to 30 gallons, with a height of 18 inches or more, since their body shape means vertical space matters as much as footprint. A group of five or six juveniles that will grow out and naturally pair off does best in 55 gallons or more. Keep water heated between 78 and 84 degrees F with moderate filtration. Vertical decor like driftwood and tall plants recreates the flooded forest roots they naturally shelter among, and dim lighting tends to suit them better than bright, direct light.

Angelfish are omnivores that do well on a high-quality cichlid pellet or flake as a dietary staple. Live or frozen bloodworms, brine shrimp, and daphnia provide valuable protein and support vivid color. Occasional blanched vegetables round out the diet. Feed once or twice daily, offering only what's consumed within a couple of minutes - breeding pairs in particular benefit from extra protein during and after spawning.

Angelfish show real cichlid intelligence, recognizing their keeper over time, and some individuals will even take food directly from a hand. Paired adults establish and defend a territory, especially around a chosen spawning site, and can become notably more aggressive toward other angelfish or similarly shaped fish during this period. Vertical tank space and dense plant cover let subordinate or newly introduced fish break line of sight and reduce conflict. Watching an established pair's parental behavior - fanning eggs, herding fry, and coordinating territory defense - is one of the most rewarding aspects of keeping this species.

Fin nipping from incompatible tankmates, particularly tiger barbs and other notorious nippers, is a common source of injury, so tankmate choice matters. Hole-in-the-head disease has been linked to poor water quality and nutritional gaps. Aggression-related injuries between angelfish themselves increase in small tanks or during pairing and breeding. Angelfish are sensitive to ammonia and nitrite spikes, so weekly 25 percent water changes are important. Avoid keeping angelfish long-term with fish small enough to be viewed as prey once they mature, such as neon tetras.