Critically Endangered
Diamond darter
Crystallaria cincotta
The diamond darter was first described in 2008 and is only the second known member of its genus, that also includes the crystal darter, C.
Appearance
Diamond darters have 11 to 13 spines on their dorsal fins, and 11 to 15 soft rays. Both fishes are translucent, and have olive-colored patterns on their bodies. The diamond darter has fewer dorsal spines and anal rays than the crystal darter.
Adults are estimated to be 3–5 inches (7.6–12.7 cm) long, with the largest specimen measuring 7.7 cm, roughly 3.0 in.
The diamond darter was first described in 2008 and is only the second known member of its genus, that also includes the crystal darter, C. Asprella.
Range and habitat
The diamond darter was described from specimens collected from the drainages of the Cumberland, Elk, Green, and Muskingum Rivers, that are all part of the Ohio River basin, from 1980 to 2005. Because of river alterations, and problems with water quality, the diamond darter's range has become greatly diminished. As of 2008, the fish is only known to still live in the Elk River, West Virginia.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
In crisis
On July 26, 2013, the United States Fish and Wildlife Service formally designated the diamond darter as an endangered species under the Endangered Species Act of 1973.
Diamond darter is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Diamond darter, Wikidata item Q2425355. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
