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Longnose gar have a typical lifespan of 15–20 years with a maximum reported age of 39. This long lifespan allows the female to sexually mature around 6 years old. Males mature sexually as early as 2 years of age. Longnose gar are sexually dimorphic; the females are larger than the males in body length, weight, and fin length.
Most species swim by undulating their enlarged pectoral fins, but the guitarfish propel themselves through the water with sideways movements of their tail and caudal fin. Most species are carnivores , feeding on molluscs and other invertebrates on the sea bed, and small fish, but the manta ray feeds on plankton sieved out of the water as it ...
The garfish is a long and slender fish with a laterally compressed body, and grows to about 50 to 75 cm (20 to 30 in) in length. The jaws are elongated and armed with sharp teeth. The pectoral, dorsal, and anal fins are situated well back on the body and the latter two are similar in appearance.
Though the one-lined pencilfish is a small fish, with adults not reaching more than 7 cm in length, it is nevertheless one of the largest species of Nannostomus. [8] It is a long slender species with a small terminal mouth, and an adipose fin. [6] It has one black longitudinal stripe that runs the length of the body and onto the caudal fin.
The pennant coralfish is a small-sized fish that can reach a maximum length of 25 cm. [5] [6] However, the average size generally observed in the nature oscillates around 15 cm. [7] Its body is compressed laterally, the first rays of its dorsal fin stretch in a long white filament. The background color of its body is white with two large black ...
Western carp gudgeon are small fish, averaging 30–40 mm long, though very large specimens may approach 60 mm. Usually, their bodies are yellowish to clear with subtle, dark grey blotches, with semitranslucent fins.
Pseudanthias hawaiiensis, the Hawaiian longfin anthias, is a small colorful species of fish in the subfamily Anthiinae. It is often treated as a subspecies of P. ventralis, [2] but some authorities prefer to treat them as separate species. [3] It is endemic to reefs at depths of 26–219 m (85–719 ft) in Hawaii and the Johnston Atoll. [3]
The longfin trevally is a predatory fish, known to take a variety of small fishes, cephalopods including squid, and crustaceans such as crabs and mantis shrimp. The species' long gill rakers also help to filter minute organisms from the seawater, adding to the fish's diet. [12] Longfin trevallies reach sexual maturity at 21 to 22 cm in length.