

Para ver se o peixe é fresco, observa a cor das brânquias.
Os peixes respiram através das brânquias, que retiram o oxigénio da água.
Uma brânquia avermelhada e brilhante é sinal inequívoco de frescura.
"a brânquia" is in the lesson "Fishes" (Level 14), along with 10 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.