Metadata

Caecogobius cryptophthalmus

Berti and Ercolini 1991

ORDERSUB-ORDERFAMILY
GobiiformesGobioideiGobiidae

Synonyms

None.

Country

Philippines

Types

Holotype: MSNVR 1262 76.5mm TL, 61.0mm SL.

Paratypes: MSNVR 1262a 57.5mm SL, MSNVR 1262b female 42.5mm SL, ZSM 27189 58.5mm SL.

Distribution

Known only from the type locality: the Calbiga Cave System, Samar Island, Philippines (12o00’N, 125o00’E).

Habitat

No published details.

Systematics

In a detailed morphological study of Mugilogobius and allied genera Larson (2001) placed Caecogobius in the subfamily Gobionellinae and the Mugilogobius clade. She also provided a revised diagnosis of the genus and a drawing of the head of paratype CMK 7249 (which is ZSM 27189 on loan to CMK). Caecogobius appears to be close to Tamanka siitensis, a freshwater goby from two crater lakes on Jolo Island, Sulu Archipelago, Philippines, and the two may share a common ancestor. The Sulu Archipelago is directly south east of Mindanao Island and it is very likely that they formed a common landmass at lowered sea level.

Kuang et al. (2018) used molecular markers to study the internal structure of the Suborder Gobioidei which contains within it eleven Families. They demonstrated that Milyeringidae is sister Family to a group of four  Families: Oxudercidae+Gobiidae+Butidae+ Eleotridae and is only disttantly related to four others: Odontobutidae, Rhyacichthyidae, Apogonidae and Kurtidae (samples from Thalasseleotridae and Trichonotidae were not availabe for analysis).

Conservation Status

TLO MuG [NE]

Since this species is known from only one site it is at least VU D2.

Museum Holdings

As above only.

Internet Resources

Zoobank registration

Key References

Rossi, G., Dal Cin, F., DeVivo, A. and Mouret, C. Journal Article 1987 SAMAR 87. Prima speleologica nel piu grande Carso della Filippine
Berti, R. and Ercolini, A. Journal Article 1991 Caecogobius cryptophthalmus n. gen. n. sp. (Gobiidae: Gobiinae), the first stygobic fish from Philippines
Larson, H.K. Journal Article 2001 A revision of the gobiid fish genus Mugilogobius (Teleostei: Gobioidei), and its systematic placement
Larson, H.K. and Husana, D.E.M. Journal Article 2018 A new species of the blind goby Caecogobius (Gobioidei, Gobiidae, Gobionellinae) from a cave system on Mindanao Island, the Philippines
Kuang, T., Tornabene, L., Lia, J., Jiang, J., Chakrabarty, P., Sparks, J.S., Naylor, G.J.P. and Lia, C. Journal Article 2018 Phylogenomic analysis on the exceptionally diverse fish clade Gobioidei (Actinopterygii: Gobiiformes) and data-filtering based on molecular clocklikeness