Sickle darter (Percina williamsi) fish profile and information / pictures of Sickle darter - Percina williamsi

Sickle darter (Percina williamsi) fish profile

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Scientific Name Percina williamsi
Classified By Page & Near, 2007
Common Name Sickle darter
Class Ray-finned fishes (Actinopterygii)
Order Perch-like fish (Perciformes)
Family Perches (Percidae)
Biology Dorsal spines (total): 11 - 16; Dorsal soft rays (total): 12-13; Anal spines: 2; Vertebrae: 44 - 45. Distinguished from all congeners, except Percina macrocephala, by having a sickle-shaped suborbital bar and a black bar subtending a medial black spot on the caudal-fin base. Differs from Percina macrocephala by having larger scales (usually 24-26 scales around the caudal peduncle vs. 27-31), 21-23 transverse scales (vs. 23-26), and 70-77 lateral scales (vs. 76-86). Has values for the combination of caudal peduncle, transverse and lateral scales and lateral scales usually 120-129 (vs. 128-141); has shorter snout on average; snout ranges from 20-28% of HL compared to 24-31 in Percina macrocephala (Ref. 75766).
Climate Subtropical
Water Temperature From - Celcius Unknown °C
Water Temperature To - Celcius Unknown °C
Depth From - meters Unknown m
Depth To - meters Unknown m
Zone benthopelagic
Distribution North America: restricted to the upper Tennessee River drainage of Tennessee, Virginia and North Carolina, USA.
Region North America
Range Unknown
Maximum Length 9.05 cm
Common Length Unknown cm
Environment Freshwater; benthopelagic
Vulnerability Low vulnerability (24 of 100)
Resilience High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Threat To Humans   Harmless
IUCN Red List Status   Not Evaluated 
Human Uses Unknown
Phylogenetic Diversity Index PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level 3.39 s.e. 0.44 Based on size and trophs of closest relatives
Is kept in Aquariums False
Occurs in Marine / Salt water False
Occurs in Brackish water False
Occurs in Fresh Water True
Occurs on Reefs False