Chologaster cornuta Agassiz, 1853

Swampfish

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Percopsiformes \| Amblyopsidae
Synonyms	... more
Common names	Risfisk, Trugkärpfling, хологастер болотный or рисовый, ... more

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Image of Chologaster cornuta (Swampfish)

Picture by Coleman, P.S.

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Main reference

Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
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Size / Weight / Age

Max length : 6.8 cm TL male/unsexed; (Ref. 5723); common length : 4.0 cm TL male/unsexed; (Ref. 12193)

Environment

Demersal; freshwater

Climate / Range

Temperate; 38°N - 32°N

North America: Atlantic Coastal drainages from Virginia to Georgia, U.S.A.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal soft rays (total): 9 - 12; Anal soft rays: 9 - 10. Strongly bicolored; dark brown above, white to yellow below. Small eyes. No pelvic fins. 3 narrow black stripes on side; one on lower side wide at front, narrow at rear. 2 black streaks along back before dorsal fin separate to encircle dorsal fin; pink gills visible. Caudal fin clear near base, often black in center; dusky black band in dorsal fin. 0-2 rows of papillae on caudal fin. 9-11 branched caudal rays.

Occurs on vegetation and debris in swamps, sloughs and quiet pools and backwaters of streams. Found year-round in open streams which are small and well-shaded with temperatures never exceeding 23°C. In such streams, its thigmotaxic tendency is shown by the difficulty in seining it from the roots and debris of its preferred habitat along edges of submerged weed banks which border sand-bottomed channels. This habitat is rich in potential food for C. cornuta like amphipods, ostracods and copepods (Ref. 34868)


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment Abundance	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Phylogenetic diversity index (Ref. 82805)

PD₅₀ = 1.0176

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (K=1.03; Fec=98)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (13 of 100)	Not marketed/unknown

Entered by Froese, Rainer

Modified by Sa-a, Pascualita

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