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 …
Malapterurus electricus
Malapterurus electricus has a characteristic appearance that distinguishes it from most other catfish. It has an …
Cobitis taenia
The spined loach has a long, slender body, slightly compressed laterally, which helps it move easily …