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The Quillfish has an extremely elongate, slender body with lon-based tall dorsal and anal fins which make the fish similar in shape to the primary feather of a bird or a quill pen. The small head is only between 4 and 7% of the length of the body and there is a wide fleshy appendage at the front of the lower jaw.
A bigmouth buffalo (top) compared to a quillback (bottom). Both of these species are long-lived catostomids [3] [5] The quillback is a slow-paced and long-lived freshwater fish species that belongs to a subfamily (Ictiobinae) for which extremely long-lived fishes are becoming known.
In gymnotiforms, the electric organ discharge may be continuous or pulsed. If continuous, it is generated day and night throughout the entire life of the individual. Certain aspects of the electric signal are unique to each species, especially a combination of the pulse waveform, duration, amplitude, phase and frequency. [12]
The quillback rockfish (Sebastes maliger), also known as the quillback seaperch, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. This species primarily dwells in salt water reefs. The average adult weighs 2–7 pounds (0.9 – 3 kg) and may reach 1 m (3 feet) in length.
The Catalogue of Life (CoL) is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxonomic Information System .
All together, there are 1,270 species of killifish, the biggest family being Rivulidae, containing more than 320 species. [2] As an adaptation to living in ephemeral waters, the eggs of most killifish can survive periods of partial dehydration.
Of all evaluated fish species, 3.6% are listed as near threatened. The IUCN also lists seven fish subspecies as near threatened. Of the subpopulations of fish evaluated by the IUCN, ten species subpopulations have been assessed as near threatened. This is a complete list of near threatened fish species and subspecies evaluated by the IUCN.
A relatively easy to keep anemone species, it is very colorful, and has distinctive bubble-like swellings on the tips of its tentacles. 30 cm (11.8 in) Condy anemone [16] Condylactis gigantea: With caution: Moderate: Common anemone species in the aquarium trade. The base color is usually brown to white, often with color on tentacle tips.