Iotichthys phlegethontis (Cope, 1874)
Least chub
Iotichthys phlegethontis
photo by Sandra J. Raredon / Smithsonian Institution, NMNH, Div. of Fishes

Family:  Leuciscidae (Minnows), subfamily: Pogonichthyinae
Max. size:  6.4 cm TL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  North America: Bonneville basin in northern Utah, USA.
Diagnosis:  Anal soft rays: 8-8. Iotichthys phlegethontis can be distinguished by the following characters: no lateral line (rarely 1-2 pores at front); large scales (34-38 lateral); dorsal-fin origin behind pelvic-fin origin; slender peduncle; 8 anal-fin rays; pharyngeal teeth 2,5-4,2; large eye; short rounded snout; fairly deep, compressed body; color consists of olive above, black specks on back and side, gold stripe along blue side, white to yellow fins; and red-gold lower side, gold eye and anal fins in breeding males (Ref. 86798).
Biology:  Inhabits marshes, ponds, vegetated areas of streams and lakes, usually over mud (Ref. 86798).
IUCN Red List Status: Endangered (EN); Date assessed: 21 February 2012 (B2ab(ii,iii,iv,v)) Ref. (130435)
Threat to humans:  harmless


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