Monday, September 18, 2017

[Ichthyology • 2017] Pomatoschistus nanus (Teleostei, Gobiidae) • the Mediterranean's Smallest Marine Fish

Pomatoschistus nanus Engin & Seyhan, 2017

DOI:  10.1111/jfb.13455  


The new sand goby species Pomatoschistus nanus (Teleostei: Gobiidae) is described from the northern coast of the Levantine Sea (eastern Mediterranean Sea) based on both morphological and DNA barcoding data. The new species is the smallest fish in the Mediterranean Sea and may be distinguished from congeners by the following features: predorsal area, first dorsal-fin base and breast naked; δ-pore missing; anterior point of the suborbital row b not reaching level of posterior point of suborbital row d; slightly emarginated caudal fin and nape coloration pattern. DNA barcode data clearly discriminate Pomatoschistus spp. in the neighbour-joining tree with an average of 17·7% interspecific K2P distance. The most closely related taxon to P. nanus sp. nov. is Pomatoschistus bathi and the most distantly related is Pomatoschistus tortonesei with 11·9 and 21·9% K2P distances respectively. Morphometric and genetic data are also provided for Pomatoschistus bathi.

Key words: DNA barcoding; Pomatoschistus bathi; Pomatoschistus nanus; rebreather; sand goby. 

Fig. 3. (a) Preserved paratype Pomatoschistus nanus sp. nov., IKC.PIS.1059, male, 14·63 mm standard length (LS); (b) preserved holotype, IKC.PIS·1057, female, 15·88 mm LS; (c) live specimen observed in natural habitat.
Pomatoschistus nanus sp. nov.

Etymology: The specific epithet is derived from ancient Greek, which means pygmaean


S. Engin and D. Seyhan. 2017. A New Species of Pomatoschistus (Teleostei, Gobiidae): the Mediterranean's Smallest Marine Fish. Journal of Fish Biology.  DOI:  10.1111/jfb.13455 


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