Drysdale hardyhead (Craterocephalus helenae)

Scientific name: Craterocephalus helenae Ivantsoff, Crowley & Allen, 1987

The Drysdale hardyhead (Craterocephalus helenae) is a freshwater fish of the family Atherinidae. Native range: Oceania, known only from the Drysdale River in the northern Kimberley region, Western Australia.

Biology

Found in rocky pools in clear, flowing streams. Occurs in still or flowing water of sandy river channels and rocky pools. Feeds chiefly on insects and their aquatic larvae and crustaceans, but some algae is also consumed.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Craterocephalus helenae
Family
Atherinidae (Silversides)
Order
Atheriniformes (Silversides)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
8.0
Common length
5.5
Environment
Freshwater; benthopelagic
Climate
Tropical
Distribution
Oceania: known only from the Drysdale River in the northern Kimberley region, Western Australia.
Conservation status (IUCN)
Lower Risk: near threatened (LR/nt)
Threat to humans
Harmless
Uses
Fisheries: of no interest
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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