Angelfish Scalare Care Guide - Aquarium Setup, Feeding & Breeding

Angelfish Scalare are among the most recognisable freshwater aquarium fish, with a laterally compressed, disc-shaped body and long, triangular dorsal and anal fins. Their trailing fins and tall profile give them an elegant appearance, while the wild form is typically silver with dark vertical bands. Selectively bred varieties include marble, gold, black, koi and veil-fin forms.

Despite their graceful movement, these fish are cichlids with confident personalities. They often investigate their surroundings, recognise regular keepers and establish territories as they mature. Adults can become strongly bonded to a mate and may defend a chosen spawning site from other fish.

In nature, Angelfish Scalare move among submerged roots, branches and aquatic vegetation where their tall bodies blend into shafts of light and shadow. Their laterally compressed shape allows them to manoeuvre through intricate cover, while their elongated fins help them make precise movements in calm water.

Wild populations vary in appearance and size according to their river system, and the aquarium trade contains both naturally occurring forms and extensive captive-bred strains. Their dramatic silhouette and interesting social behaviour have made them a longstanding favourite among freshwater aquarists.

Angelfish Scalare are native to slow-moving and quiet waters across tropical South America, particularly the Amazon, Essequibo and Orinoco river systems. They inhabit flooded forests, tributaries, swamps and densely vegetated margins in Brazil, Peru, Colombia, Guyana and neighbouring regions.

A group of Angelfish Scalare should be kept in an aquarium of at least 200 litres, with a recommended footprint around 120 × 45 cm and generous height of about 50 cm or more. Height is especially important because adults have tall bodies and extended fins. Use gentle filtration with good oxygenation but avoid excessively turbulent flow. Arrange driftwood, vertical roots, rocks and broad-leaved plants to create cover and visual barriers, while leaving open swimming space. A soft sand or fine-gravel substrate is suitable, and subdued lighting with floating plants can help recreate their shaded, vegetated habitat.

Males can reach around 15 cm (6 in) in body length, while females are usually about 12–13 cm (4.7–5.1 in). Including the extended dorsal and anal fins, large adults may stand approximately 25 cm (10 in) tall.

Angelfish Scalare are omnivores and do best on a varied diet. Use a quality cichlid pellet or flake as the staple, supplemented with frozen or live foods such as bloodworms, brine shrimp, daphnia and mosquito larvae. Small amounts of blanched vegetables or spirulina-based foods can add variety, particularly for fish that accept plant matter. Feed modest portions that are consumed promptly rather than allowing leftovers to accumulate.

Suitable companions include peaceful medium-sized tetras, larger rasboras, peaceful barbs, rams, peaceful gouramis, Corydoras and other calm South American community fish that are too large to be swallowed. Avoid fin-nipping species such as tiger barbs, very boisterous fish and tiny tetras or juvenile shrimp, which may be eaten by adult Angelfish Scalare. They should not be housed with aggressive cichlids, persistent fin-nippers or fish that compete intensely for the same territory.

Angelfish Scalare readily breed when mature and well conditioned. Provide broad vertical surfaces such as slate, broad leaves or spawning cones, and feed the prospective pair a varied diet rich in protein. The female lays rows of adhesive eggs, which the male fertilises; both parents may fan and guard the clutch. In a community aquarium, eggs and fry are often eaten, so a separate breeding tank or careful removal of the spawning surface may be needed. The eggs usually hatch after two to three days, with free-swimming fry appearing roughly five to seven days later.

Mature males are often slightly larger and may develop a broader head profile, while females are commonly a little smaller with a more rounded abdomen. These differences are subtle and unreliable outside breeding condition; the most dependable distinction is the breeding tube, which is broader and blunt in females and narrower and more pointed in males.