Teleostei (teleosts) >
Gobiiformes (Gobies) >
Oxudercidae (Mudskippers) > Periophthalminae
Etymology: Periophthalmus: Greek, peri = around + Greek, ophthalmos = eye (Ref. 45335).
Eponymy: Lieutenant-Colonel Herbert James Walton (1869–1938) was a physician who qualified in London (1893), then joined the Indian Medical Service (1896). [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; freshwater; brackish; demersal. Tropical
Western Indian Ocean: Persian Gulf to Pakistan.
Length at first maturity / Size / Weight / Age
Maturity: Lm 12.0 range ? - ? cm
Max length : 15.0 cm TL male/unsexed; (Ref. 11441)
Dorsal spines (total): 10 - 13; Dorsal soft rays (total): 12 - 13; Anal spines: 1; Anal soft rays: 10 - 11. Distinguished by the following characteristics: moderate to strong frenum uniting pelvic fins; medially, pelvic fins united for about one half their length; D I height moderate, its margin slightly rounded, no stripe on fin with only a few white spots posteriorly, no elongate spines; D2 with single dusky stripe inframarginally; dorsal fins not connected by membrane; D I with 10-13 spines; longitudinal scale count 91-121; head width 13.7-21.9% SL; pelvic fin length 11.8-13.9% SL; length of anal fin base 16.2-21.0% SL; length ofD2 base 23.2-27.2% SL; total D2 elements 13-14; total anal fin elements 11-12; TRDB 21-28 (Ref. 5218).
Facultative air-breathing (Ref. 126274); Found on mud flats. Amphibious air-breather (Ref. 31184). Feeds on variety of ocypodid crabs (Ref. 92840).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Randall, J.E., 1995. Coastal fishes of Oman. University of Hawaii Press, Honolulu, Hawaii. 439 p. (Ref. 11441)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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Special reports
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Internet sources
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=0.01023 (0.00598 - 0.01751), b=2.96 (2.81 - 3.11), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Generation time: 1.5 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
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).
![Image of Periophthalmus waltoni (Walton\](/images/thumbnails/jpg/tn_Pewal_u1.jpg "Image of Periophthalmus waltoni (Walton\")
