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> Percopsiformes (Trout-perches, pirate perches and cavefishes) > Aphredoderidae (Pirate perches)
Etymology: Aphredoderus:Greek, aphod = excrement + Greek, dere = throat, in reference to the unusual postion of the anus (Ref. 45335); sayanus:Named after the naturalist Thomas Say (Ref. 10294). Eponymy: Thomas Say (1787–1834) was a self-taught American naturalist whose primary interest was entomology. [...] (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie
North America: Eastern and central United States. Previously, two subspecies were recognized by Boltz & Stauffer 1993 (Ref. 34807): Aphredoderus sayanus sayanus in Atlantic Coast drainages from New York to Georgia; and A. sayanus gibbosus in the Mississippi River, Great Lakes, and western Gulf Coast drainages, with intergrades in Gulf Coast and Atlantic Coast drainages between Mississippi and Georgia.
Taille / Poids / Âge
Maturité: Lm? range ? - ? cm Max length : 14.0 cm TL mâle / non sexé; (Ref. 5723); common length : 10.4 cm TL mâle / non sexé; (Ref. 12193); âge max. reporté: 4 années (Ref. 12193)
Adults usually occur over mud in swamps, vegetated sloughs, ponds, lakes, backwaters, and quiet pools of creeks and small to large rivers (Ref 5723, 10294). Nocturnal feeders. They feed on aquatic insects, small crustaceans, and occasional small fish including their own young (Ref. 10294). Eggs in nests are guarded by both parents (Ref. 205).
Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Eggs in nests are guarded by both parents (Ref. 205).
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. 130435: Version 2025-2 (Global))
Cycle de vie Reproduction Maturité Maturité/épines rel. Fécondité Frai Agrégats de frai Œufs Développement de l'œuf Larves Dynamique des populations larvaires
Physiologie Composition corporelle Nutriments Consommation d'oxygène Type de natation Vitesse de nage Pigments visuels Son de poisson Maladies et parasites Toxicité (CL50)
Indice de diversité phylogénétique (Réf. 82804): PD50 = 0.7502 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00169 - 0.01184), b=3.11 (2.88 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Réf. 69278): 3.1 ±0.39 se; based on food items.
Generation time: 1.6 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Résilience (Réf. 120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (tmax=4; K=0.6).
Vulnérabilité de la pêche (Ref. 59153): Low vulnerability (21 of 100). 🛈
