Help Please!

[makkag]

hi there ,dont really know on here whether is a particular place to ask questions about illness , I was given a large tank about 5 month ago and have gradually been building my fish community,just the usual sort of species ie,danio's,pleco's,harlequin,barbs,small angels and paradise fish ,i recently bought 2 dwarf gourami one of which dird last week , it was behaving a bit weird not swimming sitting on the bottom generally floating about in an unusual manner iphoned my local aquarium who told me to check water and that the paradise fish might have stressed it out or it sounded like some sort of infection pretty vague really any way the next day it was dead. the problem now is one of my angel fish is starting to show similar symptoms
i have checked water -fine
temperature -fine
the tank is clean
filters and pumps workin ok
the only common factor is that i have fed them all a bit of bloodworm a couple of times in the last few weeks could it be this

PLEASE ADVISE

 

[WILDER]

Can you post water stats in ammonia, nitrite, nitrate and ph.
Gouramis are more prone to bacterial infections.
Signs of bacterial infections without any visable symtoms.
Being pale or darker in colour.
Being listless and lethagic.
Resting on the bottom of the tank to onside with some types of fish.
Not eating.

Best to post in the emergency section of the forum when a fish is looking unwell.