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Chologaster cornuta Agassiz, 1853

Swampfish
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Actinoptérygiens (poissons à nageoires rayonnées) > Percopsiformes (Trout-perches, pirate perches and cavef) > Amblyopsidae (Cavefishes)
Etymology: Chologaster: Greek, cholos, -e, -on = trough, kneading trough + Greek, gaster = stomach (Ref. 45335).  More on author: Agassiz.

Environment: milieu / climate zone / depth range / distribution range Écologie

; eau douce démersal.   Temperate; 38°N - 32°N

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

North America: Atlantic Coastal drainages from Virginia to Georgia, U.S.A.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 6.8 cm TL mâle / non sexé; (Ref. 5723); common length : 4.0 cm TL mâle / non sexé; (Ref. 12193)

Description synthétique Morphologie | Morphométrie

Rayons mous dorsaux (Total): 9-12; Rayons mous anaux: 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.

Biologie     Glossaire (ex. epibenthic)

Adults occur 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, thigmotaxic tendency is shown by the difficulty in seining these individuals from the roots and debris of their 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). Eggs are carried in gill chambers of females (Ref. 205).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Incubates eggs in gill chamber of females (Ref. 205).

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

Statut dans la liste rouge de l'IUCN (Ref. 119314)

  Préoccupation mineure (LC) ; Date assessed: 03 November 2011

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

FAO(Publication : search) | FishSource |

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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0088   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.3   ±0.47 se; Based on food items.
Résilience (Ref. 69278):  Haut, temps minimum de doublement de population inférieur à 15 mois (K=1.03; Fec=98).
Vulnérabilité (Ref. 59153):  Low vulnerability (13 of 100) .