Agassiz's Dwarf Cichlid Care Guide - Aquarium Tips, Diet & Breeding

Agassiz's dwarf cichlid is a colourful, relatively peaceful member of the Apistogramma group. Males usually display a long, pointed dorsal fin, extended pelvic and caudal-fin rays, and vivid combinations of blue, yellow, orange and red. Their exact colours vary considerably between geographic forms and selectively bred strains.

Females are smaller and generally more subdued outside the breeding period, but they can become strikingly yellow with strong dark markings when guarding eggs or fry. Like many dwarf cichlids, these fish communicate through posture, fin displays and changes in colour rather than relying solely on physical aggression.

In the wild, Agassiz's dwarf cichlids occupy complex habitats filled with submerged roots, fallen leaves, branches and aquatic vegetation. They spend much of their time close to the bottom, exploring the substrate for tiny invertebrates and defending small territories around shelter.

The species was named in honour of the Swiss-American zoologist Louis Agassiz. Wild populations show notable regional variation, and aquarium specimens may be sold under locality names or colour forms that differ substantially in body shape and pattern.

Apistogramma agassizii is native to the western and central Amazon Basin in South America, occurring in Brazil, Peru and parts of Colombia. It inhabits slow-moving tributaries, flooded forest margins, leaf-strewn streams and shallow pools with soft, often tannin-stained water.

A pair should be kept in an aquarium of at least 60 litres, with a footprint of roughly 60 by 30 cm; larger tanks are preferable for a male with multiple females or a community setup. Use a fine sand or smooth, soft substrate, along with driftwood, dried leaves, dense plants and several caves or other spawning shelters. Dim lighting, gentle water movement and open areas between pieces of cover help replicate their shallow, sheltered Amazonian habitat. Secure the aquarium well, as these fish can jump when startled.

Males reach up to about 9 cm (3.5 inches), while females are usually no more than 5 cm (2 inches).

This species is an omnivorous micro-predator that naturally feeds on small crustaceans, insect larvae, worms and other tiny organisms found among leaf litter and sediment. Offer a varied diet of high-quality small pellets or granules supplemented with frozen or live foods such as brine shrimp, daphnia, bloodworm and blackworm. Small portions given regularly are preferable to large meals, and fry require suitably tiny foods during their early development.

Agassiz's dwarf cichlids can live with peaceful, similarly sized community fish such as cardinal tetras, rummy-nose tetras, pencilfish, hatchetfish, small rasboras and peaceful Corydoras. Small loricariid catfish may also be suitable in a spacious aquarium. Avoid large or aggressive cichlids, fin-nipping species and boisterous bottom dwellers. During breeding, a pair or harem can become strongly territorial, so tankmates need plenty of room to stay clear of the spawning area.

Agassiz's dwarf cichlids are cave-spawning fish. Provide a small cave, coconut shell or overturned pot, and condition the fish with a varied diet. The female typically lays between 50 and hundred eggs on the cave roof, where she guards them while the male defends the surrounding territory. Eggs usually hatch after two to four days, and the free-swimming fry can be raised on infusoria or other very small foods before moving on to newly hatched brine shrimp. A male may be kept with several females in a suitably spacious aquarium, although pairs are also commonly bred.

Males are substantially larger and more brightly coloured than females, with longer dorsal, pelvic and caudal-fin extensions. Females are smaller, rounder-bodied and usually yellowish with dark markings, especially when breeding or caring for fry.