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Gastrocyathus gracilis Briggs, 1955

Slender clingfish
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Gastrocyathus gracilis   AquaMaps   Data sources: GBIF OBIS
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Image of Gastrocyathus gracilis (Slender clingfish)
Gastrocyathus gracilis
Picture by Conway, K.W.

New Zealand country information

Common names: Slender clingfish
Occurrence: endemic
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Recorded from the eastern coast of New Zealand, from North Cape to Otago and the Chatham Is.; not recorded from the west coasts of North I. or South I., except in Cook Strait. Voucher specimen(s) held at the NMNZ (Ref. 5755). Also Ref. 45524.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/nz.html
National Fisheries Authority: http://www.fish.govt.nz/
Occurrences: Occurrences Point map
Main Ref: Paulin, C. and C. Roberts, 1992
National Database:

Common names from other countries

New Zealand slender clingfish, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Gobiesociformes (Clingfishes) > Gobiesocidae (Clingfishes and singleslits) > Haplocylicinae
Etymology: Gastrocyathus: Greek, gaster = stomach + Greek, kyathos, -ou = hollow of the hand (Ref. 45335).
  More on author: Briggs.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range 0 - 7 m (Ref. 9003).   Temperate

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

Southwest Pacific: endemic to New Zealand.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm TL male/unsexed; (Ref. 9003); max. reported age: 4 years (Ref. 9003)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 5 - 6; Anal spines: 0; Anal soft rays: 5 - 7. Uniform red brown to yellowish with variable narrow bands along the head, level with the eye on the dorsal surface of the body, often breaking up into spots on the sides. Fins transparent. Distinguished from other clingfishes by its small size with a slender body tapering behind the head and the pointed fleshy tip on the upper jaw that overhangs the lower jaw.

Biology     Glossary (e.g. epibenthic)

Found amongst weed at low tide, and on brown algae in the subtidal zone. Appears to be restricted to algal species with strap-like fronds. Feeds mainly on harpacticoid copepods.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator : Williams, Jeffrey T. | Collaborators

Paulin, C. and C. Roberts, 1992. The rockpool fishes of New Zealand (Te ika aaria o Aotearoa). Museum of New Zealand (Te Papa Tongarewa). 177 p. (Ref. 9003)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FishSource |

More information

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Summary page | Point data | Common names | Photos

Internet sources

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

Estimates based on models

Preferred temperature (Ref. 115969): 13.9 - 17.8, mean 15.9 (based on 67 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00191 - 0.00831), b=3.13 (2.94 - 3.32), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  3.0   ±0.00 se; based on food items.
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (tmax=4).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).