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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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