Abstract
AbstractMicroichthys grandis n. sp. from off southwest Ireland, northeastern Atlantic Ocean, is described on the basis of a single specimen and compared with the other species of the genus. The new species is characterized by the following combination of characters: dorsal-fin rays VII–I, vii, 1; total pectoral-fin rays 18; total gill rakers 25; pyloric caeca 3; pored lateral-line scales 41 + 2; vomerine teeth 6, in a single row; denticles on posterior margin of preopercle 3, on lower margin 3; nape not humped; bony rim of orbit raised above dorsal profile; ridge present in interorbital region; lateral line gradually running towards midline of body, crossing last dark lateral bar above its centre; oblique dark lateral bars 20, lower counter-bars 12; vertical black bar on caudal peduncle present, together with another black bar below the end of the second dorsal fin; peritoneum silvery; pelvic fin short than head length; pelvic fins black. With 54.5 mm SL, this is the largest species of the genus. A revised key to the species of Microichthys is presented.
Funder
Staatliches Museum für Naturkunde Stuttgart (SMNS)
Publisher
Springer Science and Business Media LLC
Subject
Ecology, Evolution, Behavior and Systematics
Reference25 articles.
1. Alcock AW (1889) Natural history notes from H. M. Indian marine survey steamer `Investigator,' Commander Alfred Carpenter, R. N., D. S. O., commanding. – No. 13. On the bathybial fishes of the Bay of Bengal and neighbouring waters, obtained during the seasons 1885-1889. Annal Mag Natl Hist (Ser 6) 4 (23):376–399
2. Bonaparte CL (1840) Iconografia della fauna italica per le quattro classi degli animali vertebrati. Tomo III. Pesci Roma, Fasc 27–29, puntata 136–154, 10 pls
3. Eastman JT, DeVries AL (1997) Morphology of the digestive system of Antarctic nototheniid fishes. Polar Biol 17:1–13
4. Fishelson L, Goren M, Gon O (1997) Black gut phenomenon in cardinal fishes (Apogonidae, Teleostei). Mar Ecol Prog Ser 161:295–298
5. Fraser TH (1972) Comparative osteology of the shallow water cardinal fishes [Perciformes: Apogonidae] with reference to the systematics and evolution of the family. Ichthyol Bull J L B Smith Inst Ichthyol 34:i–v + 1–105, pls 1–44