Update: This Dat died today.
Treatment: Isolated him, treated with Melafix for 3 days, then did a 20% water change. Then on day 4 the Dat died.
Physical signs: At first had blood read streaks around gills, then on day 2 more red behind gill covers. Then day 3 redness started to disapear, and the fish started swiming in the water flow at the surface, but seemed ok. Then day 4 death, stayed at the bottom on side gasping and died.
Inspection: I cut the fish open, no swelling on the gills, or stomach GI track. No blood in GI track, no real signs of anything abnormal, atleast to this untrained eye. Even the initial blood red streaks could not be seen.
FYI: the water tested fine, this was one of 4 4" baby Dats. All the others along with the other fish in the tank where this one got sick seen to be doing fine.
Ideas?


Treatment: Isolated him, treated with Melafix for 3 days, then did a 20% water change. Then on day 4 the Dat died.
Physical signs: At first had blood read streaks around gills, then on day 2 more red behind gill covers. Then day 3 redness started to disapear, and the fish started swiming in the water flow at the surface, but seemed ok. Then day 4 death, stayed at the bottom on side gasping and died.
Inspection: I cut the fish open, no swelling on the gills, or stomach GI track. No blood in GI track, no real signs of anything abnormal, atleast to this untrained eye. Even the initial blood red streaks could not be seen.
FYI: the water tested fine, this was one of 4 4" baby Dats. All the others along with the other fish in the tank where this one got sick seen to be doing fine.
Ideas?

