You are here:

Saltwater Aquarium/Green spotted puffer


.We have mostly corals in our tank so I am very careful of what kinda fish we put in.. Our fish guy knows what fish we have and he said a Green Spotted Puffer would be good with our corals and the fish we already have..Since we put him in he's doing very well but everyday I get up I have another fish dead or dying.. There are no fin nipping going on becouse I check them. And I have had my water tested every other day and thats perfect.. Could it be the puffer thats hurting them some how and it not showing ?? Or is it something I am not thinking of.. Is there something else that I could check to figure out why my fish are dying . Or is it my puffer?  Thank Valerie

Good morning Valerie:

This would be extremely hard to determine without me being able to monitor the aquarium. Often times there is an invertebrate (for example a crab) that will be nipping fish during the night.

You could set up a time lapse camera overnight, than review over the footage to help figure out who the culprit is.


Saltwater Aquarium

All Answers

Answers by Expert:

Ask Experts


David Ocreef


Technical saltwater coral reef related aquarium questions are welcome. Coral, invertebrate, and peaceful species of saltwater fish questions are welcome. Questions asked on Saturday and Sunday will be answered the following Monday. REMINDER: Please check the answers pool to see if your question has already been asked and answered. Questions typically are answered within a 48 hour period, however sometimes it may take longer.


I possess over twenty-five years of hands-on experience and knowledge in the ecology of aquariums. Beyond the traditional, I have successfully tested and sustained environments that have been uncharted territories for hobbyists, for decades. I am the first to admit I don't know it all because there will always be something new, amazing, and exciting to learn about, as discoveries are made. It's a hobby one can never outgrow, or grow tired of.

MASNA - Marine Aquarium Society of North America. Director of Orange County Reef Aquatics -

Publications,, and many others.

After High School, my experience and love of marine animals influenced me to take up studies in Marine Biology. Throughout college, I studied Microbiology with an emphasis on Marine Life, as well as numerous other sciences. I continued to advance in this hobby, by building a dozen or more saltwater ecosystems all utilizing Microbes as the major source of my filtration method.

©2017 All rights reserved.