Issue With Rams And Missing Fish

So I'm starting to really get on the depressed side with my tanks. Feels like my tanks are practically cursed. Among loads of other issues over the past months, I manage to somehow encounter more and more.

In my 55g, I put in a Pearl Gourami, baby Golden Wonder Killifish, 2 Apistogrammas (Caucutoides, Super Red), and a Peacock Gudgeon. All but the Pearl Gourami were put in there to grow out just large enough so that the adult Golden Wonder in my newer 125g doesn't eat them.
The 55 gallon has had it's share of issues (seriously, I'd practically say it's a cursed tank with how many it's had in the past 6 - 7 months), but most recently the baby killifish and the peacock gudgeon have vanished. I know fish can hide well at times (my Golden Dojo in the tank is named Houdini, because he can seemingly vanish in the tank for days on end), but the KillI normally sticks to the surface, and I haven't seen it there for a few days now, or anywhere else in the tank. I also haven't seen the gudgeon anywhere in 2 - 3 days. I have to wonder if the killI was eaten (only ones that could though would be the Dojos I keep, or mayb the Pearl Gourami, but that's still a juvenile), and I can't imagine where the gudgeon would have gotten off to. In any case, it's concerning to me.

On top of that, I have a pair of Golden and German Blue Rams in my 125g, that I had switched over from my 55 gallon since the heater stopped working. They'd been becoming slower and pale with the temperatures being lower, and the 125 is set to a nice 80 degrees. All but the male GBR perked up and re-colored nicely. The male GBR since has been slow and lethargic, and seems kind of bloated too, and with a lot of discoloration. The others also started fighting a bit it seems, which concerns me. Now just yesterday, I noticed the male Gold Ram is presenting similar symptoms to the male GBR. I've got no idea what's wrong, and after issue after issue lately I'm going crazy!

Anyone able to help me out a bit? I could really use it ._.

 

Where was the Killifish when you last saw it?
I know that Peacock Gudgeons may hide in the substrate sometimes, they do that when scared or just trying to hide. I actually had one vanish myself and there weren't any traces of where it had gone.
Personally, a Dojo Loach wouldn't eat a Killifish, nor would Pearl Gourami.

Could you try checking your filters?
I would try the HOB or canister, whichever you have, and see if they are in there.

 

Where was the Killifish when you last saw it?
I know that Peacock Gudgeons may hide in the substrate sometimes, they do that when scared or just trying to hide. I actually had one vanish myself and there weren't any traces of where it had gone.
Personally, a Dojo Loach wouldn't eat a Killifish, nor would Pearl Gourami.

Could you try checking your filters?
I would try the HOB or canister, whichever you have, and see if they are in there.

The killI was at the surface just chilling last time I saw it. Checked the filters, and there's nothing, although I don't think they could get in them anyways due to the bio-wheels. I can't imagine the Gourami ate it either, and I can't see Dojos eating anything live outside of maybe some worms, but outside of that option, jumping is the only plausible answer, and I don't believe it could have. I keep the water levels a bit lower than I would otherwise, solely because I have old hoods rather than lids, so there are gaps. I keep it about the same level as I did when my adult KillI was in there to prevent jumping. I also don't see any bodies on the floor around or behind the tank to indicate it, or even anywhere wet.

W/ the Gudgeon, that's good to know at least. I don't think it could have though, since it's pretty large gravel in the tank right now. I'm figuring and hoping it's hiding where my Golden Dojo likes to vanish to, which is a spot I've still yet to discover... Outside of that, I don't think those guys are jumpers, and he's definitely not tiny like the Killifish to have the potential of being eaten by anything.

 

Not sure what’s wrong with your rams so what are the water condition. What kind of thermometer? As for the golden wonders they ARE jumpers

 

Not sure what’s wrong with your rams so what are the water condition. What kind of thermometer? As for the golden wonders they ARE jumpers

I can try to get some pictures of the rams if that would help. Unfortunately just lost the male Gold today though. Water is pretty much perfect, outside of perhaps being due for a small water change for nitrates. Temperature at 80.2 exactly, using a digital thermometer.
With the golden wonders, I know that. So far if none of the others ate him, that's my only guess. I just didn't think it could, since my adult never jumped with those water levels.

 

Pictures may help. I ask about the thermometer because sometimes digital thermometers that are battery operated can be inaccurate.
I have a pair of Golden wonders and they do jump. During water changes I’ve seen them jump as high as 6 inches. I keep the tank covered.

 

Pictures may help. I ask about the thermometer because sometimes digital thermometers that are battery operated can be inaccurate.
I have a pair of Golden wonders and they do jump. During water changes I’ve seen them jump as high as 6 inches. I keep the tank covered.

Hmm, gotcha. Never realized the Killis could or would jump so high, either. My adult female has never jumped before, more than a little splash while try to attack my hand.

Adding pictures right now. Water is a tad cloudy right now (just scraped off a load of brown algae), and he wouldn't go far from the top, so couldn't get the best pictures possible. I also noticed when taking the pictures, his eyes are no longer red.