Hot Tips: Aggressive Fish Tips

A selection of useful tidbits of
information and tricks for the marine aquarist submitted by
Advanced Aquarist’s readership. Readers are encouraged to
post them to our Hot Tips sticky in the
Reefkeeping Discussion
forum or send their tips to
for possible publication. Next
month’s Hot Tip theme will be
Favorite Lighting and Why

Aggressive Fish Tips:

I guess that the lack of answer reinforces my thinking: just
don’t! If you have a nice and peaceful reef tank, one of the
worst thing you can do is add an aggressive fish that will
terrorize/kill all of the shy/peaceful inhabitants in your reef.
If you want aggressive fish, just make a special tank just for


Other than the previous advice of “don’t rock the
boat”, If you have a new aggressive fish, try to reaarange
the aquascape to negate any territorial issues there may be with
established fish.



Always keep one eye on the fish, and one eye on the algae
scrubber stick, net, or whatever your other hand is holding/doing
in/near the tank or water. It may help keep you from getting
nailed by a tesselata eel like i was. 😉

Many of the aggressive fish, including the more sedate by
nature fish, like lions, can be surprisingly quick and sudden,
and many of the aggressive predators have other dangers in
addition to teeth (tesselatas have an anticoaglant in their
saliva that can keep a bite wound bleeding for hours, and make a
hand go numb for a day).

NEVER hand feed a lion fish, regardless of how ‘tame’
you think it may be.

Use good sound stocking rate rules, remember that 1″ of
an 8″ grouper is like 6″ of damselfish, at a minimum,
and each damsel should have a minimum of 3-5 gallons of water for
maximum comfort/life support.


  Advanced Aquarist

 Advanced Aquarist

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