Fish
![Picture](/uploads/5/0/4/0/50409869/3270080.png)
Habitat:
Found in nearly all aquatic environments
Milestones:
Vertebrate, eukaryotic, tissues, hollow nerve tube
Anatomical Features:
-Gills- On the side of the pharynx. Used for gas exchange.
-Heart-Keeps blood flowing through the closed circulatory system.
-Kidneys-Filter blood waste
Eating and Fleeting:
Jaws allow fish to eat a wide variety of food, which includes fish, plants, and other organisms. This makes them heterotrophic.
Symmetry:
Bilateral
Mobility:
Move by alternately contracting muscles on each side of the body, causing them to swim in an "S" shape.
Reproduction:
Most fish have on sex, but some have different sexes at different parts of their life or contain both. Ninety seven percent of species have fertilized eggs grow apart from the mother. The eggs are fertilized by release into the water along with sperm.
Development:
Unlike mammals, fish grow all of their lives, though growth slows considerably once matured. After the fish hatches, it becomes a larvae that looks very little like its parents. The next stage is the juvenile stage, where the fish has most of its organ. After this, the fish is finally a fully functioning adult. The final stage is senescence, where reproductive organs stop producing gametes, and the growth decreases to the lowest of all stages.
Examples:
-Phreatobius cisternarum
-Scardinius erythrophthalmus
-Etroplus suratensis
Other Information:
Most creatures that are called "fish" are not actually fish by the scientific definition.
Found in nearly all aquatic environments
Milestones:
Vertebrate, eukaryotic, tissues, hollow nerve tube
Anatomical Features:
-Gills- On the side of the pharynx. Used for gas exchange.
-Heart-Keeps blood flowing through the closed circulatory system.
-Kidneys-Filter blood waste
Eating and Fleeting:
Jaws allow fish to eat a wide variety of food, which includes fish, plants, and other organisms. This makes them heterotrophic.
Symmetry:
Bilateral
Mobility:
Move by alternately contracting muscles on each side of the body, causing them to swim in an "S" shape.
Reproduction:
Most fish have on sex, but some have different sexes at different parts of their life or contain both. Ninety seven percent of species have fertilized eggs grow apart from the mother. The eggs are fertilized by release into the water along with sperm.
Development:
Unlike mammals, fish grow all of their lives, though growth slows considerably once matured. After the fish hatches, it becomes a larvae that looks very little like its parents. The next stage is the juvenile stage, where the fish has most of its organ. After this, the fish is finally a fully functioning adult. The final stage is senescence, where reproductive organs stop producing gametes, and the growth decreases to the lowest of all stages.
Examples:
-Phreatobius cisternarum
-Scardinius erythrophthalmus
-Etroplus suratensis
Other Information:
Most creatures that are called "fish" are not actually fish by the scientific definition.
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