Gymnothorax eurostus is (very) poisonous and the poison can kill you under circumstances!!!
If you want to keep Gymnothorax eurostus, inform yourself about the poison and its effects before buying. Keep a note with the telephone number of the poison emergency call and all necessary information about the animal next to your aquarium so that you can be helped quickly in an emergency.
The telephone numbers of the poison emergency call can be found here:
Overview Worldwide: eapcct.org
This message appears for poisonous, very poisonous and also animals whose poison can kill you immediately. Every human reacts differently to poisons. Please therefore weigh the risk for yourself AND your environment very carefully, and never act lightly!
Translated with www.DeepL.com/Translator
Indo-Pacific: anti-tropical in distribution. Reported from Seychelles but Randall and van Egmond 1994 believe otherwise.
Eastern Pacific: Costa Rica and Easter Island and Chile.
Vertebrae: 120 - 123. Dark purplish brown with small yellow spots which is sparse on the tail. This species is similar to Gymnothorax meleagris in having biserial maxillary teeth, with inner and outer series about equal in length; intermaxillary teeth arranged in a peripheral series, a median series, and an intermediate series on each side between the median and peripheral series.