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Gonorynchiformes (Milkfishes) >
Kneriidae (Shellears)
Etymology: Cromeria: Perhaps related to the prehistoric Stone Age in eastern England; for the stone implements found in Cromer but needs more data.
Eponymy: Lord Cromer Evelyn Baring (1841–1917), 1st Earl of Cromer, was a soldier (1858–1877) and a particularly oppressive and racist colonial administrator. [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Environment: milieu / climate zone / kisaran kedalaman / distribution range
Ekologi
; air tawar bentopelagis. Tropical
Africa: Upper White Nile basin in South Sudan (Ref. 28714, 57474) and Ethiopia (Ref. 58460).
Size / Weight / umur
Kematangan: Lm ? range ? - ? cm
Max length : 2.9 cm SL jantan/; (Ref. 81276)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
duri punggung lunak (Keseluruhan (total)) : 9 - 10; Sirip dubur lunak: 9 - 10; vertebrata, bertulang belakang: 41 - 45. Diagnosis: pelvic fin origin well in front of anterior base of dorsal fin; preorbital stripe absent; caudal peduncle depth 10.1-12.9% of SL; dorsal precaudal fin fold more pronounced, reaching base of dorsal fin; 6-7 pectoral fin rays; 6 (rarely 7) pelvic fin rays; 3 (rarely 2) supernumerary rays in anal fin; 7 dorsal fin pterygiophores; 8+8 principal caudal fin rays; cephalic lateral line canals and supraorbital bone absent; parasphenoid slender, without foramina for internal carotid arteries; neural spine of 2nd vertebra long and slender, at least 2 times length of its vertebral centrum and similar in shape to subsequent neural spines (Ref. 57474).
Body shape (shape guide): elongated; Cross section: compressed.
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
Moritz, T., R. Britz and K.E. Linsenmair, 2006. Cromeria nilotica and C. occidentalis, two valid species of the African freshwater fish family Kneriidae (Teleostei: Gonorhynchiformes). Ichthyol. Explor. Freshwat. 17(1):65-72. (Ref. 57474)
Status IUCN Red List (Ref. 130435: Version 2025-1)
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Acuan
82804): PD
50 = 0.7500 [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).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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