Hello and welcome to FF. First of all read this article and pay note to White Tree frog enclosure requirements: Frog Forum - White's Tree Frog Care - Litoria caerulea . Then set-up a hospital/quarantine enclosure and move it there ensuring all it's requirements are met. If frog is eating, continue feeding and observe for any signs of improvement or if health worsens. There is a big possibility your frog is suffering from stress and/or toxic syndrome due to other frogs exposure. If your White's get's worse, a visit to a veterinary with frog experience is recommended ASAP.
Second, please note that keeping different frog species in the same enclosure is not recommended unless you are an expert and the enclosure is huge. Frogs have different needs in respect to temperature, humidity, etc. and some like the FBTs produce toxins that will get the other frogs sick. The daytime temperature for White's (85F) is above the range the GTFs need to prosper (78-82F); and both are above what FBT's need (68-75F). Can't see how a single enclosure of that size can provide for the needs off all your frogs without one or 2 species suffering from it
. Recommend you house your frogs separated.
Normally we ask the following questions to try and figure out what's causing the problem. Since you have 3 frog species within same enclosure it's really not possible to direct you one way without going against the other frogs. I'm going to paste them here so you can see important care points and try to correct all you can once you separate frogs. Good luck
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“Trouble in the Frog Enclosure”
The following information will be very helpful if provided when requesting assistance with either your frog or enclosure. To help with your questions, please utilize the below list and post the information in the proper forum area to get advice from FF members that keep the same frog. This will allow for little confusion and a faster more informed response.
1. Size of enclosure
2. # of inhabitants - specifically other frogs and size differences
3. Humidity
4. Temperature
5. Water - type - for both misting and soaking dish
6. Materials used for substrate
7. Enclosure set up i.e. plants (live or artificial), wood, bark and other materials.
- How were things prepared prior to being put into the viv.
8. Main food source
9. Vitamins and calcium? (how often)
10. Lighting
11. What is being used to maintain the temperature of the enclosure
12. When is the last time he/she ate
13. Have you found poop lately
14. A pic would be helpful including frog and enclosure (any including cell phone pic is fine)
15. How old is the frog
16. How long have you owned him/her
17. Is the frog wild caught or captive bred
18. Frog food- how often and if it is diverse, what other feeders are used as treats
19. How often the frog is handled
20. Is the enclosure kept in a high or low traffic area
21. Describe enclosure maintenance (water changes, cleaning, etc)
by Lynn(Flybyferns) and GrifTheGreat.