46 gallon tank - Why Do My Corydoras Keep Dying?

So I have a 46 gallon tank with 8 tiger barbs, 5 cherry barbs, 2 pearl gourami, 2 corydoras now, and 1 green phantom pleco. I have seen no aggression to the corydoras from any of the fish in the last 3 months that I've had them. I started with 5 adolfoi corydoras and about a month and a half ago one died, 3 weeks ago another died, and today another died. They get fed sinking shrimp pellets, algae wafers, and any flake that makes it to the bottom. I just did a water change a few days ago and they are always active and seem healthy. What am I missing here? And what should I do now that they are down to 2 I know they like a very minimum of 3, my LFS doesn't even get them anymore.

 

Do you have a pic.of the remaining ones?

 

If you're not having any problems with parameters or other fish dying, Id say you either got a bad batch or the Tiger Barbs are picking at them. Ive personally never had luck keeping TB's with other fish, especially small, slow-moving ones. Id actually be surprised if it wasn't the TB's picking on them.

 

Do you have a pic.of the remaining ones?

I don't have a picture right now but I can upload one later.

If you're not having any problems with parameters or other fish dying, Id say you either got a bad batch or the Tiger Barbs are picking at them. Ive personally never had luck keeping TB's with other fish, especially small, slow-moving ones. Id actually be surprised if it wasn't the TB's picking on them.

Like I said I've never seen a single barb go after the Cory's, they've got plenty of room to hide if need be and I've looked at the body's and not seen any torn fins or anything

 

So I have a 46 gallon tank with 8 tiger barbs, 5 cherry barbs, 2 pearl gourami, 2 corydoras now, and 1 green phantom pleco. I have seen no aggression to the corydoras from any of the fish in the last 3 months that I've had them. I started with 5 adolfoi corydoras and about a month and a half ago one died, 3 weeks ago another died, and today another died. They get fed sinking shrimp pellets, algae wafers, and any flake that makes it to the bottom. I just did a water change a few days ago and they are always active and seem healthy. What am I missing here? And what should I do now that they are down to 2 I know they like a very minimum of 3, my LFS doesn't even get them anymore.

Are your corydoras still dying off? I started with 10 Adolfoi and now I'm down to 6. As of this morning, the 6th is pale and probably won't make it another day. I have no clue what the problem is. My best guess is that they are starving because the Geos are taking all the food, but I can't say for sure. They are active and eating one day, then the next pale white, then the next dead. Happens one at a time every couple weeks. Extremely frustrating. These guys weren't cheap!