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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobiinae
Etymology: Cryptocentrus: Greek, kryptos = hidden + Greek, kentron = sting (Ref. 45335); nanus: Name from both Latin and Greek noun 'nanus' for 'dwarf', referring to the species’ particularly small size compared to its congeners; noun in apposition.
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
Θαλασσινό(ά) βενθοπελαγικό; εύρος βάθους 8 - 11 m (Ref. 118501). Tropical
Western Central Pacific: Fiji and possibly Palau.
Μέγεθος / Βάρος / Age
Γεννητική Ωρίμανση: Lm ? range ? - 2.34 cm
Max length : 2.2 cm SL αρσενικό/απροσδιόριστο; (Ref. 118501); 2.3 cm SL (female)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 5; Μαλακές ραχιαίες ακτίνες (συνολικά) : 10; Εδρικές άκανθες: 1; Μαλακές εδρικές ακτίνες: 8 - 9. This species is distinguished by the following characters: D IV-I,10; A I,8-9; pectoral-fin rays 16; scales in longitudinal series 65-81; predorsal scales 0-15; anterior scales cycloid, posterior scales ctenoid; anterior part of breast, prepelvic region, and pectoral-fin base are naked; head naked except on the side of nape and predorsal region, where scales extend anteriorly to about level of middle of operculum; body depth at pelvic-fin origin 4.4-5.2, mean 4.8; vomerine teeth present; gill opening extending forward to a vertical at posterior edge of preoperculum or slightly anterior; dorsal-fin spines progressively longer to fourth, longest 1.6-2.7 in HL; caudal fin rounded, 2.7-3.1 in HL; pectoral fins reaching level of anus or just beyond (3.7-4.7 in SL); pelvic fins reaching posteriorly to anus (3.6-4.3 in SL). Colouration: live individuals are black, fins are black with clear distal margins (Ref. 118501).
Cross section: oval.
Inhabitsf sand bottoms in 8.2-10.7 m depth and partners with an alpheid-shrimp which remains unidentified (deposited specimen CAS 244344). Adults mature at 2.34 cm SL or less (Ref. 118501).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Greenfield, D.W. and G.R. Allen, 2018. Cryptocentrus nanus, a new species of dwarf shrimpgoby from Fiji (Teleostei: Gobiidae). J. Ocean Sci. Found. 30:28-38. (Ref. 118501)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Αναφ.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00339 - 0.01546), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Αναφ.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Ελαστικότητα (Αναφ.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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