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.
goldfish with white like coating on them. My goldfish in my outdoor pond (4900 litres) have started to get a white film on their bodies and the smallers ones are on top of pond not doing well at all. i have tested water and it's PH is high. I have a large filter system and the water is very clear. There is a mixture of koi and goldfish in the pond.