Colu

I think you could be dealing with a parasitic infection what I would do is feed Expel p in food for 7 days feeding a small amount twice a day then follow up with a course of general cure or paracleanse then repeat the Expel p in two weeks then follow up with another course of paracleanse or general cure that will treat most types of commonly encountered parasites

I usually leave vegetable in for 24hr with no problems the dried food and frozen don't last long enough to effect water quality if your routinely over feeding that will effect your water quality

Some fish can survive for a long time before succumbing to wasting disease it's also possible that are being bullied and gradually losing weight over a period of time that would explain the color loss as well caused by stress what I would recommend is quarantine the sick fish feed him three times a day for a week if he starts to put on weight it was more than likely bulling causing the weight loss after a week your still seeing not improvement then I would do a course of flubendazole treat every other day for three days then repeat in the treatment in two weeks @nerdyaquarist

It should be about about 0.246 oz yes you can store the medicated food for up to 30days in the fridge @Stef

If you other tanks are ok i think you could rule out contamination of your well water with the symptoms your fish have I would recommend treating with a broad spectrum antibiotic treatment such as kanaplex and add some aquarium salt 1 table for 3 gallons that will help reduce any possible fluid buildup the eye you could also add some Indian almond leaves as they have antibacterial and antifungal properties @MAC

Is it possible your well water could have been contaminated just thinking outside of the box

Any rapid breathing hanging near the surface listlessness noticeable sunken belly spitting food out flashing and how long from them developing symptoms to it being fatal @nerdyaquarist

With the symptoms you could be dealing with wasting disease what I would do if a course of Expel p active ingredient is levamisole in food feeding a small amount twice a day for 7 days repeat the medicated food in two weeks in-between treatments with Expel p I would do a course of paracleanse that will cover against most types of internal parasites

First have you tested for ammonia and do you use a dechlorinator when doing water changes and have added anything new to the tanks recently do you share nets between tanks have you notice any rapid breathing hanging near the surface listlessness sunken belly's spitting out food @MAC

The fact there's no bloating is odd with the pineconing you could be dealing with a bacteria infection that would explain the rapid deterioration what I would do is add some aquarium salt 1 table for 3 gallons and if he's Still eating do a course of kanaplex in food feeding a small amount twice a day for 7 days @Minanora

CAE are none to be territorial when they get bigger you would be better putting him in a tank with cichlids or other fish that can hold there own I wouldn't add any more bottom dewelling fish it will more than likely cause more territorial disputes unless your getting a larger tank

I would add an extra air stone and a small amount of aquarium salt 1 table for 5 gallon that will aid Gill function and add essential electrolytes @BlueLineAquaticsSC

Sorry to say looks like the start of a tumor they are really common in Betta's or it could be a benign growth what I would do is a course of maracyn2 active ingredient is minocycline that has proven effective at shrinking some types of lumps @Stacey Althans

It's more than likely an injury or temperature as you mentioned causing the cloudy eye in your puffer if you haven't had any ammonia or nitrite spikes if the white patches aren't getting any worse after the full course of treatment adding salt and monitor them very closely for the next two weeks if you notice the them start to get worse then I would follow up with another course of kanaplex and Jungle fungus clear fizz tab's @Mahi27

If theirs more females than males overcrowding poor nutrition theirs a lot of factors it more than likely in your case caused by having a lot more females than males @Cyndi

Fish can get egg bound usually they will reabsorb the eggs sometimes they don't in that case Epsom salt baths 1 table for 2 gallons for no more than 15 minutes for a couple of days can work as Epsom salt acts as a muscle relaxant @Cyndi

It's going to be difficult as the Geos will be constantly digging if you planted the vallisneria in pots then let the runner's spread you would have more of a chance

If it were constipation Epsom salt baths 1 table for 2 gallons for no more than 15 minutes for a couple of days as Epsom salt acts as a muscle relaxant am not 100% that what it is what I would is watch to see if he is passing anything for a day or two before doing Epsom salt baths @Tinkertown

What I would do is quarantine him if you can and add an extra air stone and add some aquarium salt 1 table for 3 gallons that will aid Gill function and add essential electrolytes to give him more energy it more than likely he has been attacked by one of your other cichlids @FrezhFinz

What I would do is test daily and do daily 50% water changes and add a double dose of prime to help detoxify any nitrites till they constantly stay at zero

If you have a quarantine tank I would treat him separately

If it has a fuzzy appearance it could be a fungal infection what i would do if your have it is do a course of jungle fungus clear fizz tab's containing nitrofurazone and monitor him closely over the next couple of days @KittenFishMom

does it have a fuzzy appearance or any reddening it's difficult to tell off your pictures

It could be suffering from constipation have you notice it pass anything recently @Tinkertown

do you use a dechlorinator like prime when doing water changes and without noing your water parameters ammonia nitrite nitrate etc it difficult to no for sure what the causes is @SC Fish first I would test your water parameters and report back