Two Fish Died From?

[charlie89]

I bought a sixline and a green chromis and they both died

within a couple days of having them. they both looked like they were bleeding internally. they had red splotches on both sides. what could this have been? and do you think my other fish will have the same fate? so far all other fish are healthy. *fingers crossed*

 

[flower]

What else is in the tank with them?

 

[spanko]

Come from the same fish store? Looks like some kind of bacterial infection.

 

[ophiura]

Will also need to know tank size, age, inhabitants and specific water parameters.

 

[charlie89]

Tank is 55 GALLON corner tank
no dead spots in tank, fully circulated
temp is 80
ph 8.2-8.4
nitrate/nitrite 0
amonia 0
over sized canister filter
about 20lbs live rock so far
fish/inverts
leather toad stool
(2) horseshoe crabs
hawk fish
maroon clown
lawnmower goby
madarian goby
purple fire fish
feather duster
snails
sally long leg crab
sponge crab
(2) damsels
all are fine and thriving
but the two that died came from the same pet store around the same time, and those are the only two we have had trouble with.