Actually, the gulper apparently isn't a cannibal;
thebiggerthebetter
confirmed that in one of his threads not too long ago, as have other keepers of multiple gulpers. I can see, however, why many people wouldn't like it due to its other charming qualities.
I can't say that I "hate" or "despise" any fish, but there are certainly some types that just don't appeal to me whatsoever. Most "designer" fish fall into that category; short-bodies, long-fins, glofish, hybrids...most of these things would have been called "culls" not that long ago and quickly disposed of. Now they are the trendy thing to have; a tank that is full of wild-variety fish that are all identifiable as pure examples of their species is a rarity, and looked down upon quite snobbishly by many aquarists.
But species of fish that I actively dislike are pretty much non-existent. I admit that I don't see the appeal of Polypterus, at least not when they are kept in a mixed assortment of species all piled up on the bottom of a largely-barren tank like striped turds at the bottom of a wildebeest watering hole. I did once own a large Ornate Poly for a few years, and liked it...but as a single specimen, not part of a "collection".
I don't get the attraction of Rays either. Yes, they are unique and interesting, but I've never had one and never will. Meh.
Cichlids in general have really worn out their welcome with me. I still have some, and I can certainly understand why someone relatively new to the hobby would find them amazing. Their breeding behaviour, fry care, vast array of sizes and colours, relative intelligence and "personality" are terrific...but after a few decades, they are mostly just aggressive, cranky fish that in many cases make having a quiet peaceful tank more of a challenge than they are worth. In other words...they're too much like people! I certainly understand that there are dedicated aquarists who devote a lifetime to ever more exotic and rare cichlid species; more power to 'em, but, again...meh.
Among little fish...there are Bettas. Never had one, never felt the desire, although they aren't off the table completely. I might have one in a small tank on the dresser in my room in the nursing home I wind up in...
I guess if I had to pick one fish...the fish that I see and immediately think to myself "Ah, Jeez, not this s**t again!"...it would be just about any variety of Flowerhorn. Delicate...misshapen...antisocial...a fish that seems to often have all kinds of weird health issues...a fish that keepers are often warned should not be kept with any decor because it's so stupid and clumsy that it will hurt itself just swimming around...a fish that is so aggressive that it can't have tankmates, and yet will get the snot kicked out of it by many aggressive similar-sized cichlids that it decides to pick on...a fish that, when it dies, the distraught owner is comforted with "Well, yeah, it was a Flowerhorn; you know they've got problems!"...the ultimate in "should have been culled" hybrids...yeah, I guess I "hate" Flowerhorns.
If there is anyone left whom I have not managed to offend, let me know...I'm sure I can come up with other non-favourites...
