Danionella dracula

Overview

The miniature Danionella dracula is remarkable for fang-like projections in male jaws. They are not true teeth, and their function remains unresolved. Aquarium care centers on established gentle-flow conditions and very small foods.

Distribution & habitat

Known records come from Mogaung Chaung in northern Myanmar’s Kachin State, within the Ayeyarwaddy drainage. Its range may be quite restricted. Sluggish streams and pools are known habitats of other members of the genus, but a precise species-specific habitat account is lacking.

Aquarium setup

Provide an established planted aquarium with gentle movement and vegetation covering part of the surface. Mature moss supports microorganisms useful to adults and fry. An air-driven sponge filter should be fully established before fish are introduced.

Diet & feeding

Despite its delicate appearance, feeding can be straightforward. Very fine dry food, chopped Tubifex, Artemia nauplii, microworms, and size-sorted Daphnia are accepted. Vary the menu while keeping particle size appropriate.

Behaviour & compatibility

A dedicated shoal of at least twelve is preferable, especially when breeding is an aim. If companions are used, choose similarly tiny fishes with closely matching requirements.

Sexual dimorphism

Females are deeper-bodied and may show visible eggs when gravid. Older males have enlarged mouth structures with rows of projections ending in a prominent front pair; females show only rudimentary versions.

Breeding

Aquarium breeding of this species remains uncertain. An unidentified congener produced repeated fry after a group was moved into a dedicated aquarium with mature moss. Eggs formed separate cone-shaped masses on the substrate. Young were raised on Paramecium and green water before progressing to Artemia nauplii and microworms. Spinal deformities occurred in its second generation. This is a possible reference for trials, not proof of a successful protocol for D. dracula.