Facts about Dahlia pinnata. 1  Dahlia pinnata is a tuberous perennial, growing to 1 m tall. 2  The Dahlia pinnata flower petals are used in salads. 3  The Dahlia pinnata flowers are hermaphrodites and are pollinated by insects. 4  The first modern dahlia hybrids are the result of crossing between Dahlia coccinea and possibly Dahlia pinnata.
Goldfish Development. Baby goldfish are born much darker than they will be as adults. This may be because dark colors helps these small, vulnerable fish escape the attention of predators. With proper husbandry, the fish gradually change color and develop orange or gold scales. Fancy goldfish may develop color patterns including white patches.
The butterfly-tail goldfish is called the jikin in Japan, and it is believed to have been bred from the wakin goldfish. Another name for this goldfish variety is the star -tail goldfish. The physical appearance of the butterfly-tail differs from the wakin in that the tail, which, when opened, forms a large x that resembles the shape of a butterfly when viewed from behind. The buttefly-tail is a relatively hardy goldfish, but they are harder to find in pet stores than other goldfish varieties.