Cryptocentrus nanus, Blackdwarf shrimpgoby

Cryptocentrus nanus Greenfield & Allen 2018

Blackdwarf shrimpgoby
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Cryptocentrus nanus
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopteri (ray-finned fishes) > 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 / depth range / distribution range Ecology

Marine; benthopelagic; depth range 8 - 11 m (Ref. 118501).   Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Central Pacific: Fiji and possibly Palau.

Size / Weight / Age

Maturity: Lm ?  range ? - 2.34 cm
Max length : 2.2 cm SL male/unsexed; (Ref. 118501); 2.3 cm SL (female)

Short description Morphology | Morphometrics

Dorsal spines (total): 5; Dorsal soft rays (total): 10; Anal spines: 1; Anal soft rays: 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).

Biology     Glossary (e.g. epibenthic)

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 Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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. 123251)


CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO(Publication : search) | FishSource |

More information

Countries
FAO areas
Ecosystems
Occurrences
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Ecology
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Common names
Synonyms
Metabolism
Predators
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Fecundity
Eggs
Egg development
Age/Size
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Length-weight
Length-length
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Morphometrics
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Larvae
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Otoliths
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Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishipedia | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00277 - 0.01371), b=3.08 (2.90 - 3.26), 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
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .