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Benthophilus mahmudbejovi, Small-spine tadpole-goby
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Small-spine tadpole-goby
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Teleostei (teleosts) >
Gobiiformes
(Gobies) >
Gobiidae
(Gobies) > Gobiinae
Etymology:
Benthophilus:
Greek, benthos = depth of the sea + Greek, phyle, that loves (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; brackish; demersal; depth range 1 - 50 m (Ref.
59043
). Temperate; 49°N - 36°N, 37°E - 55°E
Eurasia: Caspian eastern coast of Caspian Sea and Volga delta, up to Volgograd.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 6.6 cm TL male/unsexed; (Ref.
50519
); max. reported age: 1.00 years (Ref.
59043
)
Short description
Morphology
|
Morphometrics
This species is distinguished from its congeners by the following characters: strongly depressed head; a tubercle between eyes; numerous, densely-set granules covering whole body except abdominal area; small tubercles especially on head; tubercles in dorsal row 26-29, ventral row 21-24, upper lateral row up to 20 (smaller on caudal peduncle), in lower one 10 and are tiny; chin barbel slightly compressed with thick base, longer than half eye diameter; D1 IV; origin of D2 behind anal origin; transverse rows of neuromasts on flank usually 20-22; a dark spot often in front of D2; sides with dark blotches and irregular dots (Ref.
59043
).
Occurs in fresh and brackish waters with salinity up to 13 ppt. Maximum depth 50 m, with mature adults at 1-11 m. Lives for about a year, spawns in May-August in northern Caspian, April-November in eastern Caspian. Some individuals may spawn for the first time at 6-7 months. Females probably lay eggs in 3 portions and die after spawning while males probably die 3-4 weeks alter (Ref.
59043
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Females probably lay eggs in 2-3portions (Ref.
59043
).
McAllister, D.E.
, 1990. A working list of fishes of the world. Copies available from D.E. McAllister, Canadian Museum of Nature, P.O. Box 3443, Ottawa, Ontario K1P 6P4, Canada. 2661 p. plus 1270 p. Index. (Ref.
27116
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
01 January 2008
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [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
): 3.2 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (tm<1).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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