I've never seen a crooked-face fish, but at one time a lot of the small
koi in the local pet stores (not speciality fish stores) looked quite
normal from above, but from the side it was apparent that their tails
were turned up. Normal fish profile up to the peduncle, I think it's
called, then a noticeable elbow -- looked about 25-30 degrees.

Some of them were pretty enough fish otherwise, and I seriously
considered them, but didn't know how serious the tail thing was. Haven't
seen them lately so either it was one "bad batch" due to conditions
during and shortly after spawning, or a genetic thing whose parents
haven't been spawning for those companies since. Anyway, would this type
of deformity cause problems?


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Only know that there is no spork.