What are the lyrics to one fish two red blue in Spanish?

There isn't a song called "One Fish Two Red Blue" in Spanish. It sounds like you're referring to the popular children's song "One Fish, Two Fish, Red Fish, Blue Fish" by Dr. Seuss.

If you are asking for a Spanish translation of that song, here's a version:

Un pez, dos peces, pez rojo, pez azul

(One fish, two fish, red fish, blue fish)

Un pez, dos peces, pez rojo, pez azul

(One fish, two fish, red fish, blue fish)

Un pez, dos peces, pez rojo, pez azul

(One fish, two fish, red fish, blue fish)

¡Pesca! ¡Pesca! ¡Pesca! ¡Pesca!

(Fish! Fish! Fish! Fish!)

Un pez, dos peces, pez rojo, pez azul

(One fish, two fish, red fish, blue fish)

¡Pesca! ¡Pesca! ¡Pesca! ¡Pesca!

(Fish! Fish! Fish! Fish!)

¡Pesca! ¡Pesca! ¡Pesca! ¡Pesca!

(Fish! Fish! Fish! Fish!)

¡Pesca! ¡Pesca! ¡Pesca! ¡Pesca!

(Fish! Fish! Fish! Fish!)

¡Pesca! ¡Pesca! ¡Pesca! ¡Pesca!

(Fish! Fish! Fish! Fish!)

This is a simplified version, and there are many ways to translate the song. You can find other Spanish versions online.