If I were going to try again, I would prefer Turbit with Carrier or Dragon.
"More Letters of Charles Darwin" by Charles Darwin
The Turbits also have a crest on the head, and both have the beak exceedingly short.
"Darwinism (1889)" by Alfred Russel Wallace
I have crossed turbits with barbs, as has M. Boitard (p. 34), who says the hybrids were very fertile.
"The Variation of Animals and Plants Under Domestication, Vol. I." by Charles Darwin