熱帯魚

1. Origins, structure, and basic meaning

• Structure: Spelling: 熱帯魚. Reading: ねったいぎょ. Core meaning: tropical fish.
• Basic usage: Representative examples: 水槽の中を色鮮やかな熱帯魚が泳いでいる / 店員に熱帯魚の餌の量を尋ねた.

2. Common pitfalls and similar expressions

• Range of the fish category
  • 熱帯魚 refers to fish species from tropical or subtropical waters and often appears in aquarium contexts. Not every fish kept in a tank is a tropical fish.