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i)Pisces

i)Pisces. By : Eva Adriana Muller. Pisces. The name comes from the latin plural for fish There are currently 32 000 speices of pisces. Characteristics . Kingdom of animalia Fish have eukaryotic cells The cells have cell membranes Fish cells have small vaculose

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i)Pisces

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  1. i)Pisces By: Eva Adriana Muller

  2. Pisces • Thename comes fromthelatin plural forfish • There are currently 32 000 speices of pisces

  3. Characteristics • Kingdom of animalia • Fishhaveeukaryoticcells • Thecellshavecellmembranes • Fishcellshavesmallvaculose • Cells do have a nucleus • Theyhaveprokaryoticcells • All the species of the fish found in the world are classified into the following three groups: • Agnatha - jawless fish • Chrondrichthyes - cartilaginous fish • Osteichthyes - bony fis,Ray finned group, Lobe finned group • They have guills

  4. Fossil record • The first fish and the first vertebrates, were the ostracoderms, which appeared in the Cambrian Period, about 510 million years ago. • Ostracoderms were jawless fishes found mainly in fresh water. They were covered with a bony armor or scales and were often less than 30 cm (1 ft) long

  5. Reproduction • Pisces reproduce sexually

  6. LIFE • A Fish’slifecycle • A fishs’ lifestarts as anegg • Thengrowsfor 1-2 years • Thenenterstheocean • There he growstomaturity • Thenthefishheadstosprawningareas • Thefishchangeform • Theydiposittheeggs and die (a fish has a lifeexpentancy of about 5-100 yearsolddependingonthespeicie)

  7. Nervous system

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