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Ptereleotris evides (Jordan &. Hubbs, 1925)
ARROW DARTGOBY
Arrow Dart-goby; Arrow Goby; Blackfin Dartfish; Sailfin Hovergoby; Twotone Dartfish; Encaeura evides Jordan and Hubbs, 1925

Life   Vertebrata   Fish   Microdesmidae   Ptereleotris


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Following modified from Australian Faunal Directory
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Following modified from Taiwan Biodiversity National Information Network
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&pull 20q v5.145 20180528: Error 301 Moved Permanently http://taibnet.sinica.edu.tw/eng/taibnet_species_detail.php?gen=Ptereleotris&spe=evides

Following modified from FishBase
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Ptereleotris&speciesname=evides ---> https://www.fishbase.se/Summary/speciesSummary.php?genusname=Ptereleotris&speciesname=evides
https://www.fishbase.se/Summary/speciesSummary.php?genusname=Ptereleotris&speciesname=evides ---> https://www.fishbase.se/summary/Ptereleotris-evides.html
Ptereleotris evides, Blackfin dartfish : aquarium

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Ptereleotris evides (Jordan & Hubbs 1925)

Blackfin dartfish Add your observation in Fish Watcher
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Ptereleotris evides   AquaMaps   Data sources: GBIF OBIS
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Actinopteri (ray-finned fishes) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Ptereleotrinae
Etymology: Ptereleotris: Greek, pteron = wing, fin + The name of a Nile fish, eleotris (Ref. 45335 ) .  More on authors: Jordan & Hubbs .

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

Marine; reef-associated; depth range 2 - 15 m (Ref. 1602 ), usually 2 - 15 m (Ref. 27115 ).   Tropical; 21°C - 27°C (Ref. 27115 ); 30°N - 30°S, 32°E - 150°W

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

Indo-Pacific: Red Sea and East Africa (Ref. 2798 ) to the Line and Society islands, north to the Ryukyu and Ogasawara islands, south to New South Wales, Lord Howe Island, and Rapa.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 14.0 cm TL male/unsexed; (Ref. 9710 )

Short description Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 23-26; Anal spines : 1; Anal soft rays : 23 - 26; Vertebrae : 26. Light bluish gray in life, shading posteriorly to black; snout blackish; operculum with iridescent blue markings. Chin with a low fleshy protuberance, narrowing posteriorly to a low longitudinal fold. Caudal fin lobes blackish to dark reddish, broad centro-posterior region of fin whitish to yellowish; 1st dorsal fin dull orangish; 2nd dorsal and anal fins largely blackish; pectoral base with an orange to orange-red bar edged in blue. Juveniles with an oval black spot larger than eye at lower base of caudal fin.

Biology     Glossary (e.g. epibenthic)

Occurs in outer reef slopes, also inhabits lagoons and bays. Usually in pairs as adults and in small aggregations as juveniles, Ref. 48637. Monogamous (Ref. 52884 ). Feeds on zooplankton while hovering 1 to 2 m above the bottom. Swims away from danger rather than retreat to its burrow.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Monogamous mating is observed as both obligate and social (Ref. 52884 ).

Main reference Upload your references | References | Coordinator | Collaborators

Randall, J.E. and D.F. Hoese , 1985. Revision of the Indo-Pacific dartfishes, genus Ptereleotris (Perciformes: Gobioidei). Indo-Pac. Fish. (7):36 p. (Ref. 528 )

IUCN Red List Status (Ref. 123251 )

  Least Concern (LC)  ; Date assessed: 12 March 2015

CITES (Ref. 123416 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




Human uses

Aquarium: commercial FAO(Publication : search ) | FishSource |

More information

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Internet sources

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

Estimates based on models

Preferred temperature (Ref. 115969 ): 25.8 - 29.3, mean 28.5 °C (based on 2808 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245 ). Trophic level (Ref. 69278 ):  3.4   ±0.45 se; based on food items. Resilience (Ref. 120179 ):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). Vulnerability (Ref. 59153 ):  Low vulnerability (10 of 100) .

Entered by Capuli, Estelita Emily Modified by Bailly, Nicolas Fish Forum
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