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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobionellinae
Etymology: Pandaka: Sanskrit, pandaka = without testicles, hermaphrodite, homosexual; it is a Philippines fish, the smallest of the world.
More on author: Herre.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
marina; sötvatten; brackvatten bottenlevande; pH range: 7.0 - 8.4; dH range: ? - 30; amfidrom (Ref. 46888); djupintervall 0 - 2 m (Ref. 90102). Tropical; 24°C - 30°C (Ref. 2060)
Asia: Indonesia and Philippines. Originally reported from the Malabon River, Rizal, Philippines, which has meanwhile been reclaimed. According to Ref. 6216 it has also been collected in the sea at Culion Island, off Palawan, Philippines. Recently collected in Bali (1991), Sulawesi (1988), and Singapore (1992), M. Kottelat, pers. comm.
Length at first maturity / Size / Vikt / Age
Maturity: Lm 1.0, range 1 - 1.1 cm
Max length : 1.1 cm SL hane/ej könsbestämd; (Ref. 2060); 1.5 cm TL (female)
Taggstrålar i ryggfenan (totalt): 7; Mjukstrålar i ryggfenan (totalt): 6-7; Taggstrålar i analfenan 1; Mjukstrålar i analfenan: 6 - 7. Dark spots on sides of body somewhat forming 4 cross-bands; heavy pigmentations on all bases of fins, except ventrals, apparently are continuation of body pigmentation. Head and nape naked. 22 to 25 scales in longitudinal series (Ref. 4924); further characterized by presence of black spot at middle of caudal fin base; first dorsal fin yellowish with black anterior; rounded caudal fin (Ref. 90102).
This is one of the smallest freshwater fishes: males are mature at 9 mm, females at 15 mm. The species used to frequent shady river banks in the Malabon River, Rizal Province, Luzon, Philippines; however, the type locality has been reclaimed and the remaining waters in the area are heavily polluted; the species is considered extinct in the Philippines (Rainer Froese, pers. comm., 2004). It has been apparently imported into Germany in 1958; a color photo of the fish was taken in an aquarium (Ref. 2060). Found in brackish waters and mangrove areas of Indonesia (M. Kottelat, pers. comm.).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Probably a non-guarder (RF).
Larson, H.K., 2001. A revision of the gobiid fish genus Mugilogobius (Teleostei: Gobioidei), and its systematic placement. Rec. West. Aust. Mus. (Suppl. No. 62):1-233. (Ref. 43716)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Fiskeri: saknar intresse
Ytterligare information
referenserVattenbrukVattenbruksprofilAvelslinjerGenetikElectrophoresesÄrftlighetSjukdomarBehandlingNutrientsMass conversion
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Estimates based on models
Preferred temperature (Ref.
123201): 27.6 - 29.2, mean 28.8 °C (based on 873 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00442 - 0.02163), b=3.05 (2.86 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
