Apistogramma paulmuelleri · A52

Overview

Trade code A52 identifies Apistogramma paulmuelleri more clearly than labels such as Apache, which have also been used for other fishes. This dwarf cichlid needs cover and gentle flow, with attention to female aggression during brood care.

Distribution & habitat

Apparently restricted to Loreto, Peru, known localities lie north of Nauta between the Itaya and Amazon rivers. The type site is a forest stream near the Iquitos–Nauta road, where water was clear and lightly brown at collection.

Aquarium setup

Soft sand with wood and roots forms shaded cavities; pots and pipe shelters are also useful. Leaf litter adds cover, spawning spaces, and microorganisms that can supplement fry feeding.

Keep lighting subdued, with moss, shade-tolerant plants, and floating cover as desired. Gentle established sponge filtration is adequate. Prevent organic-waste fluctuations and never use an immature tank. Groups require more room than pairs.

Diet & feeding

The genus generally feeds chiefly on small benthic invertebrates. Offer regular live or frozen Artemia, Daphnia, and bloodworms. Small pellets can be tried as a prepared alternative, with actual acceptance checked.

Behaviour & compatibility

A dedicated aquarium or small peaceful dither companions is preferable. Avoid other members of the genus, including look-alikes sold under overlapping trade names.

Sexual dimorphism

Males are larger and more colorful with longer fins. Large males show red markings and metallic blue lines on the cheek and gill cover. The tail is rounded but often slightly asymmetric, with a longer upper lobe.

Breeding

Eggs are normally attached within crevices or cavities. Females provide most care for eggs and fry. In restricted space a strongly defensive female may require the male to be removed.

Notes

Apache has also labeled other unresolved populations. Preserve collection information and identification codes when managing breeding stock rather than combining fish solely on the same sales name.