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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;
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Names |
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Links to other sites |
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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.
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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 http://192.134.151.83/Summary/speciesSummary.php?genusname=Akko&speciesname=rossi ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Akko&speciesname=rossi https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Akko&speciesname=rossi ---> https://fishbase.mnhn.fr/summary/Akko-rossi.html
Akko rossi
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Akko rossi
Female picture by
Van Tassell, J.
Classification / Names
Common names
|
Synonyms
| Catalog of Fishes(
genus
,
species
) |
ITIS
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CoL
|
WoRMS
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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
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
).
Inhabits black mud, living in burrows (Ref.
92840
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
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
Not Evaluated
Threat to humans
Human uses
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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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Updated: 2024-03-29 11:29:52 gmt
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