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Siluriformes (Catfishes) >
Amphiliidae (Loach catfishes) > Amphiliinae
Etymology: Amphilius: Greek, amphi = on both sides + Greek, leios = fat; crassus: From the Latin noun crassus (m), meaning fat or stout in reference to the deep, stout body (Ref. 103388).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce demersal. Tropical
Africa: Rufiji and Wami river basins, eastern Tanzania (Ref. 103388).
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 8.6 cm SL macho / no sexado; (Ref. 103388)
Descripción breve
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 7; Espinas anales: 0; Radios blandos anales: 8 - 10. Diagnosis: Amphilius crassus is diagnosed from A. jacksonii, A. ruziziensis, A. pedunculus and A. lujani by its shorter caudal peduncle, caudal peduncle length 13.3-15.5% of standard length vs. 16.0-20.9%, and from A. jacksonii, A. ruziziensis and A. lujani by its deeper caudal peduncle , caudal peduncle depth 10.1-12.0% of standard length vs. 4.8-9.5% (Ref. 103388). It is diagnosed from A. ruziziensis, A. pedunculus and A. frieli by its longer dorsal-fin insertion to adipose-fin insertion length, 42.2-44.6% of standard length vs. 37.5-41.7% (Ref. 103388). Amphilius crassus is further diagnosed from A. jacksonii by its deeper body, body depth at anus 14.5-17.4% of standard length vs. 9.6-13.2%, and from A. ruziziensis by wider interorbital width, 28.9-34.1% of head length vs. 23.4-25.1%, and deeper body, body depth at anus 14.5-17.4% of standard length vs. 11.1-12.9%; it is further diagnosed from A. lujani by having fewer branched pectoral-fin rays, 7-8, rarely 9 vs. 9, and from A. frieli by its fewer branchiostegal rays, 6-7, rarely 8 vs. 8-9, fewer branched pectoral-fin rays, 7-8, rarely 9 vs. 9-10, fewer gill rakers on the first gill arch, 6-8, rarely 9 vs. 10-11, rarely 9 or 12, and wider interorbital width, 28.9-34.1% of head length vs. 25.1-27.7% (Ref. 103388).
Body shape (shape guide): elongated.
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Thomson, A.W., L.M. Page and S.A. Hilber, 2015. Revision of the Amphilius jacksonii complex (Siluriformes: Amphiliidae), with the descriptions of five new species. Zootaxa 3986(1):61-87. (Ref. 103388)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00490 (0.00202 - 0.01186), b=3.15 (2.94 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.0 ±0.3 se; based on size and trophs of closest relatives |
Resiliencia (Referencia 120179) |
Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Preliminary K or Fecundity.). |
Vulnerabilidad pesquera (Ref. 59153) |
Low to moderate vulnerability (33 of 100). 🛈 |