puffer fish

Question
we have one green puffer fish.( spotted) in a 10 gallon
brackish water tank. has heater, filter. he has always been lively. past 11 months. the last 2 wks or so, he hasnt been eating much...just laying low on bottom. not his usual self.
tank is clean.  have no idea why he is so lethargic as of late. any info would be greatly appreicated. we love this little guy!

Answer
Hi Elizabeth,
  Please check to make sure that the heater is actually working and that the temperature in the tank is around 80oF or so.  Cold water often makes fish lethargic.

-- Ron
  rcoleman@cichlidresearch.com
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