Agh,Riley stopped tail biting for awhile,and then today he bit a rather large chunk of his tail off! :/ I don't get why he keeps doing this. I've had him for about 3 months and the first 2 weeks he spent in a 2 gallon that had daily water changes,he never bit his tail then. Since then I moved him into a 5 gallon (Which I did cycle.) and he starting tail biting. Could larger areas stress him more and cause him to tail bite? Heres some more information.
Housing: 5 gallon,Cycled. Heater. Two clay pots and one silk plant.
Temp: Always stay between 78-80 degrees.
Water changes: Every week I do a 25% water change and every 2 weeks I do a 75% water change and wash all decor.
Also he's never been sick,he eats fine,builds bubblenest CONSTENLY,and is very active. Help? Thank you.
Ps:I have been doing 50% water changes every week to help with his fins growing back.