noun
neon tetra
A small, brightly colored tropical freshwater fish popular in home aquariums. Scientific name: Paracheirodon innesi.
ネオンテトラは群れで泳ぐととてもきれいです。
Neon tetras are very beautiful when they swim in a school.
Variant with interpunct; less common but still seen.
Cardinal tetra (Paracheirodon axelrodi); similar in appearance but the red stripe extends the full length of the body, whereas in the neon tetra it stops halfway.
Loanword from English 'neon tetra', referring to the fish's neon-like iridescent blue stripe.