Diamond darter (Crystallaria cincotta)

Scientific name: Crystallaria cincotta Welsh & Wood, 2008

Diamond darter (Crystallaria cincotta)

The Diamond darter (Crystallaria cincotta) is a freshwater fish of the family Percidae. Native range: North America, Cumberland, Elk, Green and Muskingum river drainages of the Ohio River basin, USA. Known only to be extant in the Elk River, West Virginia.

Biology

Dorsal spines (total): 11 - 13; Dorsal soft rays (total): 11-15; Anal soft rays: 11 - 13. Distinguished from populations of Crystallaria asprella of the Gulf Coast, Mississippi River and Wabash River by a combination of the following features: gape width larger approximately equal to or exceeding the inter-pelvic fin base width; a preorbital blotch distinctly separate from the anterior orbital rim; pelvic fins distinctly falcate in both sexes; cheek scale rows reduced (modally 2); opercle scale rows reduced (modally 2); number of midlateral blotches higher (modally 13); number of anal-fin rays lower (modally 13); number of dorsal-fin spines lower (modally 12); and scales below the lateral line higher (modally 11).

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Crystallaria cincotta
Family
Percidae (Perches)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
7.7
Environment
Freshwater; benthopelagic
Climate
Temperate
Distribution
North America: Cumberland, Elk, Green and Muskingum river drainages of the Ohio River basin, USA. Known only to be extant in the Elk River, West Virginia.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
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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