Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Oxudercidae
(Mudskippers) > Periophthalminae
Etymology: Apocryptes: Greek, apo = outside, far away + Greek, kryptos = hidden (Ref. 45335). More on author: Hamilton.
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal; amphidromous (Ref. 51243); depth range - m (Ref. ), usually - m (Ref. ). Tropical; 23°C - 28°C (Ref. 13614)
Indian Ocean: India, Bangladesh and Myanmar.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 26.0 cm TL male/unsexed; (Ref. 1479)
Distinguished by the following characteristics: total elements in D2 21-23; total elements in anal fin 20-24 ; head length 21.9-23.9% SL; in some preserved specimens, 6-7 vertical narrow, brown bars along sides, anteriormost coursing from dorsum through pectoral base; caudal fin length 22.6-32.9% SL (Ref. 5218).
Found in rivers and estuaries (Ref. 1479). Burrows within tidal limits of river deltas from the east coast of India to Burma (Ref. 5218).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Talwar, P.K. and A.G. Jhingran, 1991. Inland fishes of India and adjacent countries. Volume 2. A.A. Balkema, Rotterdam. (Ref. 4833)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: minor commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00392 - 0.01167), b=2.92 (2.77 - 3.07), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±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.).
Vulnerability (Ref. 59153
): Low vulnerability (25 of 100) .
Nutrients (Ref. 124155
): Calcium = 252 [119, 494] mg/100g ; Iron = 1.06 [0.63, 1.96] mg/100g ; Protein = 16.3 [14.5, 18.0] % ; Omega3 = 0.332 [0.144, 0.715] g/100g ; Selenium = 61.1 [26.1, 133.1] μg/100g ; VitaminA = 24.2 [7.3, 71.1] μg/100g ; Zinc = 1.81 [1.10, 2.86] mg/100g (wet weight);