Most aggressive fish for 40breeder

  • We are currently upgrading MFK. thanks! -neo
some may not agree with me, but I suggest a flowerhorn. not just a short body
as long as filtration is excellent and theres lots of water changes, the 18" depth is fine for a flowerhorn for several years.
breeders in thailand raise these guys in small divided tanks so they will be lucky to be in that tank solo


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My personal opinion is that you aren't going to find a super aggressive fish hat will fit in a 40. Most get much larger than what a 40 would allow. Having said that, a wolf fish might be possible. Beyond that I too would suggest something that breeds. Breeding fish are the only thing I can think of that will display the kind of aggression he is looking for.

Edit: I missed Ionz's comment of a puffer and I would second that for a solo fish and dismiss the wolf. The puffer could live quite comfortably and they generally tend to be aggressively territorial.


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Fahaka but I believe they will out grow the tank.
 
i'd have to go with a shoal exodons. i have five in my 38 gal, even watching them eat flakes is quite entertaining. i hardly ever feed them feeders but when i do its very violent.
 
im going exodons as well, not a solitary fish like he wanted but a wolf pack in there own rights. just as good as piranhas or so i've heard without the skittishness or tendency to hide out whenever your around the tank; plus those guys are the cliche predators everyone wants
 
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