04-15-2009, 04:11 AM
[#008000]Okay so every body knew it was a tiger fish! [/#008000]
[#008000]Here is Wikipedia.org definition of this predator. BTW found a news report where a woman thought that she was cleaning a gold fish bowl and was attacked by two small red breast piranhas and de-skinned two of her fingers. I have seen what they can do in seconds to a mouse and gold fish that weren't bleeding. You won't find me swimming with those suckers.[/#008000]
Piranhas are normally about 15 to 25 cm long (6 to 10 inches), although reportedly individuals have been found up to 43 cm (18.0 inches) in length.[url "http://en.wikipedia.org/wiki/Piranha#cite_note-4"][5][/url]
Serrasalmus, Pristobrycon, Pygocentrus and Pygopristis are most easily recognized by their unique [url "http://en.wikipedia.org/wiki/Dentition"]dentition[/url]. All piranhas have a single row of sharp teeth in both jaws; the teeth are tightly packed and interlocking (via small [url "http://en.wikipedia.org/wiki/Cusp_(dentistry)"]cusps[/url]) and used for rapid puncture and shearing. Individual teeth are typically broadly triangular, pointed and blade-like (flat in profile). There is minor variation in the number of cusps; in most species, the teeth are tricuspid with a larger middle cusp which makes the individual teeth appear markedly triangular. The exception is Pygopristis, which has penta cuspid teeth and a middle cusp usually only slightly larger than the other cusps. In the scale-eating [url "http://en.wikipedia.org/wiki/Catoprion"]Catoprion[/url], the shape of their teeth is markedly different and the [url "http://en.wikipedia.org/wiki/Premaxilla"]premaxillary[/url] teeth are in two rows, as in most other serrasalminae.[url "http://en.wikipedia.org/wiki/Piranha#cite_note-Freeman-1"][2][/url]
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[#008000]Here is Wikipedia.org definition of this predator. BTW found a news report where a woman thought that she was cleaning a gold fish bowl and was attacked by two small red breast piranhas and de-skinned two of her fingers. I have seen what they can do in seconds to a mouse and gold fish that weren't bleeding. You won't find me swimming with those suckers.[/#008000]
Piranhas are normally about 15 to 25 cm long (6 to 10 inches), although reportedly individuals have been found up to 43 cm (18.0 inches) in length.[url "http://en.wikipedia.org/wiki/Piranha#cite_note-4"][5][/url]
Serrasalmus, Pristobrycon, Pygocentrus and Pygopristis are most easily recognized by their unique [url "http://en.wikipedia.org/wiki/Dentition"]dentition[/url]. All piranhas have a single row of sharp teeth in both jaws; the teeth are tightly packed and interlocking (via small [url "http://en.wikipedia.org/wiki/Cusp_(dentistry)"]cusps[/url]) and used for rapid puncture and shearing. Individual teeth are typically broadly triangular, pointed and blade-like (flat in profile). There is minor variation in the number of cusps; in most species, the teeth are tricuspid with a larger middle cusp which makes the individual teeth appear markedly triangular. The exception is Pygopristis, which has penta cuspid teeth and a middle cusp usually only slightly larger than the other cusps. In the scale-eating [url "http://en.wikipedia.org/wiki/Catoprion"]Catoprion[/url], the shape of their teeth is markedly different and the [url "http://en.wikipedia.org/wiki/Premaxilla"]premaxillary[/url] teeth are in two rows, as in most other serrasalminae.[url "http://en.wikipedia.org/wiki/Piranha#cite_note-Freeman-1"][2][/url]
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