1. a small freshwater fish native to Central America, popular in aquariums, with a flattened body and often bright colors

Examples

• The platyfish is one of the easiest tropical fish for beginners to keep.
• Her aquarium contained several colorful platyfish swimming near the bottom.
• Platyfish are livebearers, meaning they give birth to free-swimming young.
• The pet store had red, orange, and yellow platyfish for sale.
• Platyfish prefer slightly alkaline water conditions.
• These platyfish have been breeding successfully in the community tank.