Ive got 5 neon tetras in a 6 gal
One of them is acting like sad; he swims alright but keeps hiding most of the time. Like for 2 days I hadn't seen him eat and today i found him hiding below the driftwood.
Hes lost almost all his red colored stripe (turned into like brown), yet the "neon" stripe is still hanging there. (Im guessing they belong to different skin layers)
Waters perfectly fine, I have an *** kicking evaporation rate so i have to add like 1/2 gal
every three days (saves water changes, I still vacuum the gravel every 1 or 2 weeks).
all other NT's are eating like crazy (the five minute eating time they've got)