The gempylid Nesiarchus nasutus is reported for the first time from Argentinean waters, the southernmost occurrence of the species in the Southwestern Atlantic. This suggests that the fluctuating environmental characteristics of the area would be proper for the presence of tropical and subtropical species.
southwestern Atlantic; Brazilian current; trichiuroids fish; deep-sea
| mm | %SL | |
|---|---|---|
| Total length Fork length |
627 585 |
|
| Standard length Head length |
545 140 |
25.69 |
| 1st Pre-dorsal
length 2nd Pre-dorsal length Pre-pectoral length Pre-pelvic length |
130 429 136 143 |
23.85 78.71 24.95 26.24 |
| Pre-anal length | 430 | 78.90 |
| Head length | 153 | 28.07 |
| Body depth | 59 | 10.82 |
| Head depth | 50 | 9.17 |
| Caudal peduncles depth | 21 | 3.85 |
| %HL | ||
| Snout length Upper-jaw length Pre-orbital length |
73 75 74 |
52.14 53.57 53.86 |
| Inter-orbital length | 19 | 13.57 |
| Eye diameter | 18 | 12.86 |
| 1st Dorsal fin
elements 2nd Dorsal fin elements |
XIX I - 21 |
|
| Anal fin elements | I - 21 | |
| Pelvic fin elements | I - 5 | |
| Pectoral ray fins | 13 | |
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