A general meaning of fish is to be together, to be inseparable from you, and to like being with you for life.
One is that I hope you can take good care of yourself and be happy forever.
The two are plain, want to be with you, and have no distractions.
Catfish means never forgetting.
Carp indicates that children will reach the high level of "Carp yue longmen" in the future.
If you look at the color of fish, gold is wealth, black is luck, and red is deep love!