the female orca's dorsal fin is curved and the males dorsal fin is straight
Male orcas have huge, triangular dorsal fins that can grow up to six feet in height. Females and younger orcas have smaller, curved dorsal fins. See the picutre in the link.
Eels look like snakes. Orcas don't look like snakes.
Pretty much like a regular dolphin; beak-like snout, greyish body, a dorsal fin.
like a female
Like goldfish
Dogfish are a type of shark. They look like other sharks. They have a slender body with a large dorsal fin sticking out the top. They also have very sharp teeth.
Frost dragons look very much like European dragons, but the crests on their heads are more pronounced and they have webbed feet for swimming after prey such as orcas and leopard seals.
Male Pacus tend to have a more obvious red belly than females. Some also say the males gave a more "pointed" dorsal fin, but I have a male and female and their dorsal fins don't seem to look any different. Hope that helps!
Males are somewhat larger. Also, their reproductive organs are located on the underside of the body. Males have two slits, one concealing the penis and one further behind for the anus. The female has one genital slit, housing the vagina and the anus. A mammary slit is positioned on either side of the female's genital slit.
Like blonde Swedish people
yes
ugly