First detection of biofluorescence in a deep-sea anglerfish.

Biofluorescence has been observed in a variety of fishes, but is rare in deep-sea environments where light from the surface cannot reach. Here, we document biofluorescence in an oceanic anglerfish, the Pacific footballfish. Green biofluorescence was observed in small spots on the distal surface of the esca.

DNA barcoding of marine fishes from Saudi Arabian waters of the Gulf.

We used the cytochrome oxidase subunit I (coI) gene DNA to barcode 117 endemic Gulf and cosmopolitan Indo-West Pacific fish species belonging to 54 families and 13 orders. Novel DNA barcodes were provided for 18 fish species (Trachinocephalus sp., Nematalosa sp.

Morphology and ontogeny of multiple lateral-line canals in the rock prickleback, Xiphister mucosus (Cottiformes: Zoarcoidei: Stichaeidae).

The structure and ontogeny of lateral-line canals in the Rock Prickleback, Xiphister mucosus, were studied using cleared-and-stained specimens, and the distribution and morphology of neuromasts within lateral-line canals were examined using histology. X. mucosus has seven cephalic canals in a pattern that, aside from four branches of the infraorbital canals, is similar to that of most teleostean fishes.