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The caudal fin rays number 55 to 67. The upper jaw projects beyond the lower jaw and the tooth pad on the upper jaw has a narrow, crescent-shaped extension on each side. The premaxillary band of teeth has lateral backward extensions. The skin of the stonecat is thick and is yellowish-brown in color. The sides of the head shade to yellow.
The L-number system is a semi- scientific classification system of catfish based on photographs of shipments of tropical catfish of the family Loricariidae published by the German aquarium magazine DATZ (Die Aquarien- und Terrarienzeitschrift (The Aquarium and Terrarium Magazine)). The first L-number was published in 1988.
Noturus, madtoms. Prietella. Pylodictis. Satan. Trogloglanis. The Ictaluridae, sometimes called ictalurids, are a family of catfish native to North America, where they are an important food source and sometimes fished for sport. The family includes about 51 species, some commonly known as bullheads, madtoms, channel catfish, and blue catfish.
Hypostomus plecostomus, also known as the suckermouth catfish or common pleco, is a lizard-like tropical freshwater fish belonging to the armored catfish family (Loricariidae), named for the longitudinal rows of armor -like scutes that cover the upper parts of the head and body (the lower surface of head and abdomen is naked soft skin).
Counting the number of annuli (rings) on a scale provides the fish age and the spacing between rings is proportional to the growth of the fish. [a] The ease of collection of this aging structure is not without its tradeoffs, as the major bias of scales used as an age estimation structure is their tendency to underestimate the age of older fish.
Female Ancistrus sp. on a piece of cucumber. These fish are often kept by aquarists, as they are dutiful algae-eaters and smaller in adult size than the common plecos usually seen in pet shops. They reach up to 15 cm (5.9 in) in males, and 12 cm (4.7 in) in females. Their recommended temperature is 23–27 °C (73–81 °F).
Doras flavopictus Steindachner, 1908. Agamyxis pectinifrons, the spotted talking catfish, spotted raphael catfish or whitebarred catfish, is a species of thorny catfish found in the Amazon basin where it has been recorded from Bolivia, Brazil, Colombia and Peru. This species grows to a length of 15 centimetres (5.9 in) SL.
Siluridae is the nominate family of catfishes in the order Siluriformes. About 105 living species of silurids are placed in 12 [1] or 14 [3] genera.. Although silurids occur across much of Europe and Asia, they are most diverse in Southeast Asia, beyond which their diversity decreases in temperate East Asia, the Indian subcontinent, Southwest Asia, and Europe.