6.1 FISH

6.1 FISH

1. WHAT ARE THEY LIKE?

   • They are AQUATIC vertebrates
   • Skin covered by SCALES
   • ECTOTHERMIC: their body temperatute depends on the environmet (water)
   • Hydrodinamic shape
     • They have FINS to propel themselves and change the direction in the water
   • They breathe by GILLS

2. VITAL FUNCTIONS

   • NUTRITION
     • Most are carnivores, and there are also hervibores and omnivores
   • REPRODUCTION
     • They reproduce sexually
     • Most are oviparous and lay eggs without an impermeable shell
   • INTERACTION
     • They have an exclusive sense organ that detects water vibration

3. TYPES

   • BONY FISH
     • They have skeletone of bones
     • Gills are covered by OPERCULUM
     • Mouth is located at the edge of their head
     • HOMOCERCAL tail fin
     • They have flat, roud scales.
   • CARTILAGINOUS FISH
     • They have a skeleton of cartilage
     • Gills not covered by an OPERCULUM
     • Mouth have a ventral position
     • HETEROCERCAL tail fin
     • They do not have a swim bladder.
     • They have tooth-like scales

Images and files in the map

• Fish | Educational Video for Kids. (Embed)
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