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Akko rossi J. L. Van Tassell and C. C. Baldwin, 2004
BLACK-FIN SPECTER-GOBY
Life   Vertebrata   Fish   Gobiidae   Akko

Akko rossi
© Copyright Photographer/SFTEP, 2002 · 0
Akko rossi

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Overview
Main identification features
  • all fins black except pelvics
  • dorsal and anal fins- 15 soft rays
Head ~22% of standard length; body very elongate; depth ~12% of standard length; first dorsal fin VII spines, joins lower 1/4 of second dorsal (I, 15); anal fin I, 15; eyes minute; dorsal and anal fins confluent with tail; dorsal, anal, tail and pectoral fins with serially branched rays (each ray with small side branches); pelvics fused in a deeply cupped, nearly circular disc, the disc on a stalk; mouth large, nearly vertical, ends before center of eye; jaw with depressible, widely spaced, canine-like teeth; gill arches with papillae rather than rakers; no lateral line or head pores; scales small, smooth, non-overlapping, imbedded, cover body; head & pectoral base scaleless.

Color of preserved fish: Body translucent, paler below; speckled with black on upper half of head and body; all fins black except the pelvics.

Size: 12 cm.

Habitat: mud bottoms, estuaries.

Depth: 5-10 m.

Known only from the Gulf of Fonseca, El Salvador.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Northern Tropical (Mexican Province to Nicaragua + Revillagigedos).
Depth Range Max: 10 m.
Depth Range Min: 5 m.
Diet: pelagic fish eggs; zooplankton.
Eastern Pacific Range: Northern limit=14; Southern limit=14; Western limit=-89; Eastern limit=-88; Latitudinal range=1; Longitudinal range=1.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore; Planktivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Estuary; Mud; Soft bottom only; Soft bottom (mud, sand,gravel, beach, estuary & mangrove).
Inshore Offshore: Inshore; Offshore; In & Offshore.
IUCN Red List: Not evaluated / Listed.
Length Max: 12 cm.
Regional Endemism: TEP endemic; Continental TEP endemic; Panamic province endemic; All species.
Residency: Resident.
Salinity: Brackish; Marine.
Water Column Position: Bottom; Bottom only;


Names
Scientific source:

Links to other sites

References
  • Van Tassell, J.L. and Baldwin, C.C., 2004., A review of the gobiid genus Akko (Teleostei: Gobiidae) with description of a new species., Zootaxa, 462:1-15.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Akko&speciesname=rossi ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Akko&speciesname=rossi
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Akko rossi
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Akko rossi Van Tassell & Baldwin , 2004

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Pictures | Google image Image of Akko rossi Akko rossi
Female picture by Van Tassell, J.

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

Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Akko: Greek, akko, -oys = bogeyman, ugly devil (used to frighten children) (Ref. 45335 ) .

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

Marine; demersal; depth range 7 - 10 m (Ref. 58018 ). Tropical

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

Eastern Central Pacific: Gulf of Fonseca, El Salvador.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 9.0 cm SL male/unsexed; (Ref. 53408 )

Short description Morphology | Morphometrics

Distinguished by the following characteristics: very small eyes; light pink body color with darker red areas composed of blood capillaries close to surface; elongate body; first dorsal with VII spines; upper and lower jaws with enlarged, widely spaced teeth that overlap the lips of both jaws; greatly reduced head pores, occasionally absent (Ref. 92840 ).

Biology     Glossary (e.g. epibenthic)

Inhabits black mud, living in burrows (Ref. 92840 ).

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

Main reference Upload your references | References | Coordinator | Collaborators

Van Tassell, J.L. and C.C. Baldwin , 2004. A review of the gobiid genus Akko (Teleostei: Gobiidae) with description of a new species. Zootaxa 462:1-15. (Ref. 53408 )

IUCN Red List Status (Ref. 130435 )

  Data deficient (DD)  ; Date assessed: 21 May 2007

CITES

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans






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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Publication: search | 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. 82804 ):  PD 50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00708 (0.00333 - 0.01504), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic level (Ref. 69278 ):  3.3   ±0.4 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.). Fishing Vulnerability (Ref. 59153 ):  Low vulnerability (10 of 100).

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