I assume you mean the Trademe site and not our PT&E?
Either way, it is not our business and we do not condone "name and shame" type things. As said, better to approach ther person involved and offer help, rather than criticising them somewhere, especially as they have no way of knowing, or defending themselves.
We are a site to help fellow fish hobbyists, not the animal police.
If you feel unable to talk to them directly then call the SPCA. You might also contact Trademe and let them know you are concerned about the state of their animals but, unless they are selling them on their site, I doubt they would be interested.
You also have no idea why they currently have a lot of animals "in poor condition". They may have removed them from elsewhere ready to nurse them back to health.