Classification / Names
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Blenniiformes (Blennies) >
Tripterygiidae (Triplefin blennies) > Tripterygiinae
Etymology: Enneapterygius: Greek, ennea = nine times + Greek, pterygion = little fin (Ref. 45335); genamaculatus: Species name from the Latin 'gena', a cheek, and 'macula', a spot, referring to the spots on the cheeks of the males of the species (Ref. 57774).
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin démersal. Tropical
Western Indian Ocean: known only from St. Brandon Shoals.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 2.3 cm SL mâle / non sexé; (Ref. 57774)
Description synthétique
Morphologie | Morphométrie
Épines dorsales (Total): 15 - 16; Rayons mous dorsaux (Total): 9-11; Épines anales 1; Rayons mous anaux: 18 - 19. Dorsal fins III+XII-XIII+9-11 (usually III+XIII+10); anal fin I,18-19 (usually 19 rays); pectoral fins 15-16: 3-4+5-6+7-8. Lateral line with 13-15 pored and 21-23 notched scales, notched segment starting one scale row below end of pored segment. Total lateral scales 32-33; transverse scales 2/4. Vertebrae 10+24. Mandibular pores 3+1+3. Head length 3.5-3.9, body depth 4.6-5.4 in SL; eye 2.7-3.1 in head length. Small (less than 25 mm SL), slender fishes; nape scaled, belly naked. Pelvic-fin rays united by membrane for entire length of shorter ray, longer ray reaching anal fin spine. First dorsal fin lower than second; maximum height of second dorsal fin about 70% of body depth. Supratemporal sensory canal crescent-shaped. Orbital cirrus small and rounded. Tip of tongue narrow and rounded; palatines with teeth; maxilla reaching vertical through anterior margin of pupil (Ref. 57774).
Female members of the Tripterygiidae family have eggs that are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites (Ref. 240). Larvae are planktonic which occur primarily in shallow, nearshore waters (Ref. 94114).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Holleman, W., 2005. A review of the triplefin fish genus Enneapterygius (Blennioidei: Tripterygidae) in the western Indian Ocean, with descriptions of four new species. Smithiana, Bull. 5:1-25. (Ref. 57774)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
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Estimates based on models
Phylogenetic diversity index (Ref.
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).
Niveau trophique (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
