topminnow

• 一类小型、常色彩鲜艳的鱼，生活于温暖淡水或半咸水中，在水面附近觅食，多为卵胎生，有些种类被用于控制蚊虫。

A small, often brightly colored, surface-feeding fish found in fresh or brackish warm waters, known for being viviparous and sometimes used for mosquito control.

1. Small surface-feeding fishC1formal

   A small, often brightly colored fish that lives near the surface of fresh or brackish warm waters. It is viviparous (gives birth to live young) and is frequently used to control mosquito populations.

   食蚊鱼

   • Topminnows are often introduced into ponds to help manage mosquito larvae.
   • The vibrant colors of the topminnow make it a popular subject for aquatic studies.
   • These surface-feeding fish thrive in the warm, shallow waters of the region.

   同义词mosquitofish

2. Swordtail fishC1formal

   A freshwater fish native to Central America, characterized by a long, sword-like extension on the tail of males. It is a popular species in home aquariums.

   剑尾鱼

   • The male topminnow, known as a swordtail, has a distinctive elongated tail fin.
   • Aquarium enthusiasts often keep topminnows for their striking appearance and active behavior.
   • This species of topminnow is native to the rivers of Central America.

   同义词swordtail