colour change

Hey everyone! I have two Betta fish right now, a koi plakat male and a marbled veil tail male. I've had my koi plakat for around a year now and I've noticed that he is no longer koi. He used to have these beautiful vibrant blacks and reds but now he is all dull red. I don't know if he is sick or...

First off, I am an amateur amateur betta owner. The last time I owned a betta was probably in sixth grade, and I am now in college. I would fill out the form with all the details, but being that I got this Half Moon male betta today from PetSmart on a whim, I don't really have much other than...

Hi all! I'm a completely new betta owner here and I've googled and researched the heck out of everything I can think of. However, I haven't heard anything about colour changing and I'm worried it might be something to do with the tank or my care! Three weeks ago, I bought a betta from the local...

Hi, :-D I'm new to this forum and also pretty new to proper fish keeping. Note that I said "proper". Anyways, I've had a male fighter for about 3-4 days and most of the time he looks perfectly fine and happy. :lol: However, sometimes he turns a pale pinkish-purplish colour instead of his usual...

Hello! I am back from my vacation! But, when I came back from my vacation, my betta fish was turning aqua blue!!! Is this normal? Thanks!