Need help to identify a fish

[Rocky998]

I dare you to put your finger in the tank and wiggle it like a worm

 

[dadpeek67]

Admiring this guy (or lady?) growing bit by day

 

[Rocky998]

Admiring this guy (or lady?) growing bit by day
View attachment 164647

He/she is getting some more coloring to him/her!!! Looking good

 

[dadpeek67]

Watch 5v7d5l | Streamable

Watch this video on Streamable.

streamable.com

look at the mouth...

 

[Colin_T]

Watch 5v7d5l | Streamable

Watch this video on Streamable.

streamable.com

look at the mouth...

That doesn't look good.

Increase aeration/ surface turbulence.

Check the water quality and do a 75% water change and gravel clean the substrate immediately.
Make sure any new water is free of chlorine/ chloramine before it's added to the tank.

If it doesn't improve after a big water change do another water change tomorrow and add some salt.

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SALT
You can add rock salt (often sold as aquarium salt), sea salt, or swimming pool salt to the aquarium at the dose rate of 1 heaped tablespoon per 20 litres of water. If there is no improvement after 48 hours you can double that dose rate so there is 2 heaped tablespoons of salt per 20 litres.

Keep the salt level like this for at least 2 weeks but no longer than 4 weeks otherwise kidney damage can occur. Kidney damage is more likely to occur in fish from soft water (tetras, Corydoras, angelfish, Bettas & gouramis, loaches) that are exposed to high levels of salt for an extended period of time, and is not an issue with livebearers, rainbowfish or other salt tolerant species.

The salt will not affect the beneficial filter bacteria, fish, plants, shrimp or snails.

After you use salt and the fish have recovered, you do a 10% water change each day for a week using only fresh water that has been dechlorinated. Then do a 20% water change each day for a week. Then you can do bigger water changes after that. This dilutes the salt out of the tank slowly so it doesn't harm the fish.

If you do water changes while using salt, you need to treat the new water with salt before adding it to the tank. This will keep the salt level stable in the tank and minimise stress on the fish.

When you first add salt, add the salt to a small bucket of tank water and dissolve the salt. Then slowly pour the salt water into the tank near the filter outlet. Add the salt over a couple of minutes.