Philippines country information

Common names: Bia, Dwarf pygmy goby
Occurrence: native
Salinity: freshwater
Abundance: scarce (very unlikely) | Ref:
Importance: of no interest | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Originally reported from the Malabon River, Rizal, Philippines, which has meanwhile been reclaimed. First described by Herre in 1927 and was rediscovered in 1950 at Dagatdagatan Saltwater Fishery Experimental Station in Malabon (Ref. 4924). Reported in the sea at Culion Island, off Palawan (Ref. 6216). Also reported from Taal Lake (Ref. 12165). Endemism questionable since this species is also reported from other countries (Kottelat, pers. comm.). Also Ref. 439, 2060, 4924, 48613, 94476.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/rp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Herre, A.W.C.T., 1953
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Gobiidae (Gobies) > Gobionellinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Pygmækutling, 矮鰕虎鱼, Zwerggrundel, ... more

Main reference

Larson, H.K. 2001. (Ref. 43716)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 1.1 cm SL male/unsexed; (Ref. 2060); 1.5 cm TL (female)

Length at first maturity
L_m ?, range 1 - 1.1 cm

Environment

Marine; freshwater; brackish; demersal; pH range: 7.0 - 8.4; dH range: ? - 30; amphidromous (Ref. 46888); depth range 0 - 2 m (Ref. 90102)

Climate / Range

Tropical; 24°C - 30°C (Ref. 2060), preferred ?

Distribution

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.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 7; Dorsal soft rays (total): 6-7; Anal spines: 1; Anal soft rays: 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.).

IUCN Red List Status (Ref. 115185)

Critically Endangered (CR) (A1ace)

Threat to humans

Harmless

Human uses

Fisheries: of no interest

More information

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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5078 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.0 ±0.4 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278)
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Vulnerability (Ref. 59153)
Low vulnerability (10 of 100)

Price category (Ref. 80766)

Pandaka pygmaea Herre, 1927