What is the most difficult fish to keep alive?

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elephant nose or freshwater dolphin fish, got a couple of it before, haven't had any luck, I guess they are very sensitive against changes on water parameter.
 
Tiny EBJD and any GT. Any inbred hillbilly fish like guppies and angelfish that can easily be of poor genetic history. But I've had pretty great fortune with feeder guppies after deworming them.

Oddly, around here, male bettas. Dropsy just keeps happening.
 
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knifegill;4999022; said:
Tiny EBJD and any GT. Any inbred hillbilly fish like guppies and angelfish that can easily be of poor genetic history. But I've had pretty great fortune with feeder guppies after deworming them.

Oddly, around here, male bettas. Dropsy just keeps happening.

At my store, the female bettas seem to come in with dropsy quite frequently. Haven't figured out a cure yet. Males are usually fine. I've had trouble with guppies in the past, and livebearers in general seem to be prone to weird infections (columnaris and other fungal/bacterial woes).

nicholasdances;4939222; said:
arowana with the egg sack still attached
only fish I have failed on multiple times

realfish;4941092; said:
Baby arrowanna with egg sack

The reason for this is that the male aro keeps the babies in it's mouth pretty much until they are established and eating, and the egg sac is gone. Most breeders end up taking the babies well before this and shipping and whatnot stresses them; "newborn" anything are very sensitive. The reason fish have so many babies is that many don't survive...but the breeders are shipping them before natural selection happens. You're better off spending the extra money on an established 4-5" aro. If you're going to try aros with an egg sac, you're best keeping them alone, not moving them much, and I've had the best luck with keeping teeny feeder guppies with them to learn to munch on first. Never had luck getting them to eat initially with dead food (bloodworms etc).
 
for some upsursd reason, i cant keep a clown loach alive for more than a year or so, i had good enough water quality for an arowana and chiclids, but not a loach...:confused:
 
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