By how the mate looks and how strong they are
hormones
Territory, offspring, and mates.
Fish of all kinds (including goldfish) will pick on a weak fish if there is one in their vicinity. In general goldfish are peacefull. During spawning season (spring) though, the males will be seen nudging the females in order to get them spawning. So no, they do not normally 'pick on their tank mates'.
Animals get noticed by mates by their appearance, or call. Some birds puff up their chest feathers and make a unique noise, while male sheep fight for their lady!
animals and plats compete over : food,space,sunlight,mates,
no some humans do
There are many different species of animals that select mates for life. One such animal is a penguin, as the father stays with the egg as the mother goes off to fish and feed.
Animals use pheromones to communicate with each other by signaling information about mating, territory marking, and warning signals. Pheromones help animals identify members of their species, locate suitable mates, and establish social hierarchies within their groups.
You can find a list of animal mates by searching for specific animal species on websites such as National Geographic, Animal Diversity Web, or the World Wildlife Fund. These sources often provide information on the mating behaviors and reproductive partners of various animals.
The same as everywhere else, mates, food, territory.
No. They are solitary animals and only seek mates when needed.
trees and other animals and mates and prey