Acuario literally means "aquarium". It's a visually striking and somewhat unexpected word to find in a love song, making it memorable and unique.
In the lyrics, Morat uses acuario as a beautiful metaphor for a shared, intimate world between two lovers. Despite the common saying "there are plenty of fish in the sea" ("Hay tantos peces en el mar a diario"), the song suggests that the two individuals are destined to be together, swimming in their own "aquarium"—a confined, special space where only they exist, highlighting their unique connection.
This song from the Colombian band Morat is about a breakup that maybe shouldn't be permanent. The singer looks back on a relationship that ended because, as he says, "Tú no querías creer que nos hacíamos daño" (You didn't want to believe we were hurting each other). Now, it's awkward. They pretend to be strangers, and it's only considered okay to talk on birthdays. But he still holds out hope that getting back together might make sense again one day.
His main argument for a second chance is pretty convincing: they have history! If they get back together, "Ya no tendremos que empezar de cero" (We won't have to start from zero). He's already an expert in understanding her, knowing exactly when she needs a kiss versus when she needs a hug. The only way they'd have to start over is if she completely forgets him. In that case, he'll just have to pray that he won't have to start from scratch to win her over again.