Classificação / Names
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Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335); galeatus: Specific name from the Latin galeatus (helmeted), in reference to the the body ridges on the head.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce demersal. Tropical
Asia: Way Gedongwani, a tributary of Way Sekampung in Sumatra, Indonesia.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 2.8 cm SL macho/indeterminado; (Ref. 75761)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Espinhos dorsais (total) : 1; Raios dorsais (total) : 5; Raios anais : 8 - 10; Vértebras: 30 - 33. Diagnosed by the following characters: space between anterior nostril and base of nasal barbel about equal to nostril diameter; anterior and posterior nostrils relatively small with diameter less than that of eye; anterior nostril situated at end of short tube; jaws subequal (lip of upper jaw projecting past lower jaw); caudal fin emarginate (not strongly forked); eye dorsolateral, not protruding above head when viewed from side; large depression below eye; posterior edge of pectoral spine with 1-3 small serrae (much less than half width of spine); obvious concavity on top of head extending from anterior median fontanel to posterior median fontanel with body ridge along either side formed by medial edges of frontals and supraoccipitals; ridges converge posteriorly at elevated supraoccipital process (Ref. 75761).
Inhabits gravel-sandy run in a medium-sized turbid river with average width of 40 m (Ref. 75761).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Page, L.M., R.K. Hadiaty, J.A. López, I. Rachmatika and R.H. Robins, 2007. Two new species of the Akysis variegatus species group (Siluriformes: Akysidae) from Southern Sumatra and a redescription of Akysis variegatus Bleeker, 1846. Copeia 2007(2):292-303. (Ref. 75761)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2024-1)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [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).
Nível Trófico (Ref.
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
