Green swordtail
Xiphophorus hellerii
Green swordtails have elongated, narrow bodies that are flattened on the sides. They also have large …
Freshwater fish spend part or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%.
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Xiphophorus hellerii
Green swordtails have elongated, narrow bodies that are flattened on the sides. They also have large …
Devario malabaricus
The Malabar danio has a fusiform (spindle-shaped) body and is a larger, more robust relative of …
Gasterosteus aculeatus
The Three-spined Stickleback has an elongated body that is compressed from the sides. The tail stalk …