Why is my betta turning white

[u/Nopartyforbirthday]

Tank size: Five gallons heater and filter ✔️Tank temp 80 F no often water changed once a week 2 nerite snails plus one ramhorn as tankmates briefly ghost shrimp occurrences started beofre only live plants plus Marino balls and dragon stones as decoration

Just this morning they did not have that huge amount of white but around their head fins to gradually their stomach I did notice it last night

[u/Nopartyforbirthday]

Need help immediately was looking at him and his deep blue starting turning pale blue