Classification / Names
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Siluriformes (Catfishes) >
Amphiliidae (Loach catfishes) > Amphiliinae
Etymology: Amphilius: Greek, amphi = on both sides + Greek, leios = fat; frieli: Named for John P. Friel in recognition of his excellent contributions to the study of African fishes (Ref. 103388).
Eponymy: Dr John Patrick Friel is an American biologist and ichthyologist who is Curator of Fishes, Amphibians and Reptiles, Cornell University Museum of Vertebrates. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
; acqua dolce demersale. Tropical
Africa: upper Congo River basin upstream of Kabalp [=Kabalo?] in Democratic Republic of Congo and Zambia (Ref. 103388), including Lufira River drainage (Ref. 103388) and Luapula River drainage (Ref. 103388).
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 13.6 cm SL maschio/sesso non determinato; (Ref. 103388)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 7; Spine anali: 0; Raggi anali molli: 8 - 10. Diagnosis: Amphilius frieli is diagnosed from all other species of the Amphilius jacksonii complex by having more gill rakers on the first gill arch, 10-11, rarely 9 or 12 vs. 6-9, rarely 5 or 10 (Ref. 103388). It is further diagnosed from A. jacksonii by its deeper caudal peduncle, caudal peduncle depth 9.7-11.4% of standard length vs. 4.8-7.9%, shorter caudal peduncle, caudal peduncle 14.4-16.4% of standard length vs. 16.7-20.6%, and less slender body, body depth at anus 13.9-14.9% of standard length vs. 9.6-13.2%; it is further diagnosed from A. ruziziensis by having more branchiostegal rays, 8-9 vs. 6-7, a deeper caudal peduncle, caudal peduncle depth 9.7-11.4% of standard length vs. 8.6-9.5%, shorter caudal peduncle, caudal peduncle 14.4-16.4% of standard length vs. 18.7-20.3%, and less slender body depth, body depth at anus 13.9-14.9% of standard length vs. 11.1-12.9%; it is further diagnosed from A. pedunculus, A. crassus, and A. lujani by its narrower interorbital width, 25.1-27.7% of head length vs. 28.1-35.8%, and from A. crassus by having more branchiostegal rays, 8-9 vs. 6-8, more branched pectoral-fin rays, 9-10 vs. 7-9, and a shorter dorsal-fin insertion to adipose-fin insertion length, 37.5-41.2% of standard length vs. 42.2-44.6%; it is further diagnosed from A. lujani by its deeper caudal peduncle, caudal peduncle depth 9.7-11.4% of standard length vs. 8.1-9.5%, and shorter caudal peduncle, caudal peduncle 14.4-16.4% of standard length vs. 16.8-20.9% (Ref. 103388).
Body shape (shape guide): elongated.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Fonte Biblio.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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