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Hardheads are also harvested for industrial purposes in commercial bottom-trawling operations. Annual harvests vary greatly, but from 1987 to 2001, 1.04 million pounds of marine catfishes (including both the hardhead catfish and the gafftopsail catfish) were harvested in the IRL region. The harvest was valued at $777,497. [8]
The largest recorded weight for a gafftopsail catfish is 4.54 kg (10.0 lb) [4] and 69 cm (27 in) in length. [5] A more common weight and length of gafftopsails caught is 1–2 lb (450–910 g) and 12–16 in (30–41 cm). As gafftopsail catfish grow longer, they increase in weight, but the relationship is not linear.
Although hardhead catfish reach a weight of about 5.5 kg (12 lb) and are edible, they have a mixed reputation as game fish and are often considered nuisance bait stealers. [12] A less-abundant species, more highly regarded as a game and food fish, is the gafftopsail catfish, Bagre marinus. The range of the gafftop extends further south, to ...
Gold is suitable for dentistry because it is malleable, nearly immune to corrosion, and closely mimics the hardness of natural teeth, thereby causing no harm to natural teeth during chewing. [5] Gold was used before silver became available and has continued to be used for specialized purposes. [ 5 ]
The mouth cone ("everted pharynx") of a possible new species of Meiopriapulus, a marine worm in the Priapulida, bears pharyngeal teeth. [5] Fossils of the Yunnanozoon and Haikouella possess pharyngeal teeth. The lower pharyngeal bones of cichlids also carry specialized teeth which augment their normal mandibular teeth in the breakdown of food.
An L-number is not a formal scientific designation, but it allows people to identify various loricariid catfish by a "common name" before the fish is officially described. When a loricariid receives an official scientific name, the L-number (or numbers) is retired; [1] best practice is then to use the scientific name.
If you thought teeth were only worth a couple bucks from the tooth fairy, think again. On a brand-new episode of "Antiques Roadshow" Monday, a Fred Myrick scrimshaw tooth got a price tag that ...
The system uses two numbers to define each tooth. One to specify the quadrant, and one to specify the tooth within that quadrant. Orientation of the chart is traditionally "dentist's view", i.e. patient's right corresponds to notation chart left. The designations "left" and "right" on the chart below correspond to the patient's left and right.