Type of fish: Electric Yellow
Symptoms: Swimming madly in a corkscrew pattern then dying of exhaustion ? ?
Other tank mates: 1 x chinese algae eater (4yo, about 15cm long), 10 ELs (5-12cm) 1 cobalt blue (15cm)
Tank size / capacity: 130L (I am pretty sure)
Type of Food fed: Aqua One floating cichlid pellets
Feeding frequency/amount: once daily - 3 pinches
Substrate: limestone sand
Type of filtration: eheim
Frequency of filter cleans: 2-3mths
Frequency and % volume of water changes: fortnightly - 20%
Last water change: 2 days ago
PH: 7.4
KH:
GH:
Nitrite:
Nitrate: 0
Ammonia:
Phosphate:
Water temp: 26-27 deg
Medications used recently to date: only stresscoat at water changes
Any recent changes..new fish/filters/power outages etc etc: None ?
I just had a fish suddenly appear sick and realised one of its fins had been bitten off, this was about 5 days ago ... and since then 6 other fish have died (not the one with the missing fin). I tested the water and got the above results. It comes on suddenly - eg this morning I checked the tank - all OK - then got home from work and three dead (see attached pic). They look like they've been frightened to death. Any suggestions?? As I don't want to lose them all ..........