Need help in sexing these guys.
The smaller one is a young male but have trouble determining the two bigger ones. Read that L184 female have bristle growth
They look too thin. You will need to get them back to eating.
Offer them a raw sweet potatoe slice. You should be able to leave the slice in the water for 2-4 days before changing it for a new one. Also try feeding protein rich foods like maybe frozen artemia or a frozen shrimp (yes, the ones you can buy in a supermarket, make sure they are clean/pure, no other ingredients added). They will need higher temperatures to start eating properly. Go for 28-29°C if possible.
Top right, might be a female. Almost no bristle and at least some waist, compared to the rest. On the other hand, females are usually not the biggest or fastest growing fish and it does have a very broad head. I guess Size is about 3"/7cm?
Managed to take a better pic of the suspected female. It's about 10cm. . It has bristle growth on the middle. So I'm thinking it could very well be a male