25KK jpeg Male, 30mm (1.2in) TL. Neil Armstrong photo

Taxonomy

The taxonomy of hypseleotrids from eastern and south-eastern Australia is presently unresolved. It appears that several undescribed species are present. Differentiating between adults of these species is difficult. Juveniles cannot be distinguished.

Size

To 40mm (1.6in) TL.

Conservation Status

Not listed.

Distribution & Abundance

Widespread, though typically less abundant and more patch in occurrence than western carp gudgeon in Cooper Creek and the Bulloo River.

Habitat & Ecology

Typically found in riverine habitats. Midgley's carp gudgeons appear to be more common in the upper reaches of rivers where more waterholes tend to occur. They are usually carnivorous.

Reproduction

Midgley's carp gudgeon are sexually dimorphic. They usually spawn in spring and early summer at temperatures over 20°C (68°F). Females mature at around 25mm (1in) TL. Approximately 200-400 eggs are laid on a hard object near the bottom (not near the surface like in western carp gudgeon). The male guards the eggs until hatching occurs in 7-8 days. Fry are around 3-4mm (0.12-0.16in) and require very small first foods. There is no further parental care after hatching (Unmack unpub. data).

Threats

None specifically.

Conservation Action

Not relevant.

Conservation Recommendations

Undertake research into the taxonomy, biology, and ecology of central Australian populations.

Important References

This file was last modified:  18 March 2003