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Cypriniformes (Carps) >
Gastromyzontidae (Hillstream loaches)
Etymology: microcephala: Name from Latin adjectives m'icro-' for small and 'cephala' meaning head, referring to its small head; as an adjective.
Eponymy: Mari Albert Johan Van Manen (1877–1943) was a Dutch ethnographer, theosophist and orientalist who made a specialty of the study of Tibet and its texts. [...] (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Subtropical
Asia: China.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 7.3 cm SL mâle / non sexé; (Ref. 120400)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
This species is distinguished among the barred group in Vanmanenia by the following set of characters: lateral side of the body with 14-22 vermiculations, the widths smaller than the diameter of the eye (vs. 10-15 regular bars with widths equal to the diameter of the eye in V. tetraloba); dorsal side of head covered with a large black blotch (vs. several short dark brown vermiculations in V. striata, V. tetraloba); gill opening smaller, its upper angle level with the lower edge of the eye (vs. opening larger and its upper angle aligned with the middle point of the eye in V. crassicauda, V. serrilineata, V. striata, V. tetraloba); dorsal part of the body with 4-6 black saddles (vs. 7-9 in V. striata); patch of the caudal-fin base dissociated, not connected to the upper and lower margin of the caudal peduncle (vs. connected in V. tetraloba); head smaller, its depth 45.2-47.1% HL (vs. head larger, depth 48.1-60.0% HL in V. striata, V. tetraloba) (Ref. 120400).
Cross section: circular.
Inhabits rapids, torrents, and waterfalls. Feeds mainly on algae attached to rocks and on organic residues and small aquatic insects (Ref. 120400).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Li, X., W. Zhou and X.-J. Che, 2019. Loaches of Vanmanenia (Cypriniformes: Gastromyzontidae) from Yunnan, China with description of a new species. Zootaxa 4603(1):125-144. (Ref. 120400)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 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=0.00646 (0.00283 - 0.01475), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
2.7 ±0.2 se; based on size and trophs of closest relatives |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |