Classification / Names
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Blenniiformes (Blennies) >
Tripterygiidae (Triplefin blennies) > Tripterygiinae
Etymology: Enneapterygius: Greek, ennea = nine times + Greek, pterygion = little fin (Ref. 45335); elaine: Named for Elaine Heemstra, in recognition of her considerable and excellent contribution to the illustration of Indo-Pacific fishes, including several in this paper; a noun in apposition (Ref. 57774).
Eponymy: Elaine Margaret Heemstra née Lawrence formerly Grant is Scientific Illustrator Emeritus at the South Africa Institute for Aquatic Biodiversity. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino demersale. Tropical
Distribuzione
Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri
Western Indian Ocean: currently known only from Rodriguez Island.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 2.3 cm SL maschio/sesso non determinato; (Ref. 57774)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 12 - 16; Raggi dorsali molli (totale) : 9 - 11; Spine anali: 0; Raggi anali molli: 17 - 19; Vertebre: 35. Dorsal fins III + XIII + 10 (rarely with 12 spines and 9-11 rays); anal fin I,17-19; pectoral fins 15: 3+5+7 (rarely 4+4+7); lateral line with 14-15 (usually 14) pored scales and 21-22 notched scales (rarely 20-23), starting second scale row below end of pored segment. Total lateral scales 33; transverse scales 2/5. Vertebrae: 10 precaudal, 25 caudal. Mandibular pores: 3+1+3. Head 3.2-4.0 in SL; eye 2.4-3.0 in head length. Small fish, seldom longer than 20 mm SL. Body slender, scales large, nape scaled, abdomen naked. Pelvic fin rays slender, united by membrane for half the length of the longer ray. First dorsal fin about half height of second. Pectoral fin large, longest ray reaching to penultimate spine of second dorsal fin. Mouth oblique, small and pointed, maxilla reaching vertical through anterior margin of orbit. Orbital cirrus small and pointed (Ref. 57774).
Known only from the lagoon around the island of Rodrigues (Ref. 57774). Eggs 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
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Pesca: di nessun interesse
Strumenti
Special reports
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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=0.00955 (0.00304 - 0.03005), b=3.02 (2.77 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
