This is artificial selection, which has refined the looks of most fish on sale in pet stores. Natural selection, the mechanism for true evolution, still allows for colorful things. Some colorful fish do exist in the wild, which is why some particuarly pretty species were bred to be kept in aquariums.
Sex and the Single Guppy 1. If being flashy and colorful attracts predators, why do you think guppies are so colorful? One reason that the guppies are so colorful is because the genes are passed done from past generations.
The bright colors on the males also attract female guppies. The females are more drab and grey, which makes them less visible to their predators. The higher amounts of courtship the male guppy has, the more likely the chance they will be able to mate.
Females preferred males with higher courtship rates. After viewing the guppy gallery, pick the fish you find most interesting. Describe the coloration of the fish you chose. The common name of the fish we chose was the Guppy or the millions fish.
The scientific name of it is Poecilla Retriculata. The average size of it is 1. The fish has an orange and black fin on its back and the back tail is a green.
The main body of the fish has splotches of yellow and around it is a charcoal black. The lower fin, like the tail, is also green. After viewing the predator gallery, pick the fish you find most interesting. The common name of the fish we chose was the Pike Cichlid.
The scientific name is the Crenicichla Alta. The average size is 12 inches or 20 centimeters. The fish is mainly pink and it has different hues of the color. Some of the pink shades include, bubble gum pink, a purply pink, dark pink, etc. Habitat conditions that could affect predator populations include natural rock dams, small pools, and open rivers.
Guppies that live above small rock dams face a moderate amount of predators, while guppies that live above large rock dams enjoy little to no predators. Small pools of water can sustain small numbers of guppies, but are not deep enough for larger predators.
The place where predators thrive are the large open rivers with lots of water and no hidden places. Who is John Endler? What did he study and where did he study it? He studied the evolution of guppies and how their colors affected them in Trinidad.
For each of the three stream areas, describe the guppy coloration Pool 1: In pool 1, the guppies are extremely bright with multi-colored, large spots. There is a total of 75 guppies in Pool 1. There is also a total of 12 predators in the pool.
In pool 2, the guppies are medium coloration on the body and tail, with medium sized spots. There is a total of 83 guppies in Pool 2 and 22 predators as well. In pool 3, the males have drab coloration and they have very small spots concentration near the tail.
There is a total of guppies Pool 3 and there are 42 predators as well. Develop your own hypothesis about guppy coloration. The hypothesis should answer the questions: Why do guppies in different areas of the stream have difference in coloration?
You can choose from the list on the simulation, or make up your own Predators are causing guppy populations to become more drab by preying on the most brightly colored individuals. Describe how predators influence guppy coloration. Predators influence guppy coloration by eating the guppies that are easiest to find.
By way of illustration, if the most vibrant guppies are the easiest to find, the population of the drabbest guppies will surpass the population of the most vibrant.The guppies upstream of a water posed a barrier to predators, therefore, colorful guppies thrive in reproduction and mating and are also sexually selected to thriver over dull guppies because they are more attractive to female guppies or sexually selected than dull colored guppies.
Nov 01, · Male guppies live in a crossfire because if they are brightly coloured they attract the most mates but have a higher chance of getting eaten, but if they are dark coloured they have a harder time attracting mates, but have a lower chance of getting eaten.
The guppies also change color because female guppies mate with the brightest guppy then can find. The guppies that are the highest in the water and are the brightest, tend to have a much higher chance of being eaten by predators. Male guppies live in a crossfire because if they are brightly coloured they attract the most mates but have a higher chance of getting eaten, but if they are dark coloured they have a harder time attracting mates, but have a lower chance of getting eaten.
Guppies are also good as feeder fish (depending on the animal) as they easily catch the intended animals attention. Simply put: easy to make easy to sell. This page may be out of date.
I have been breeding guppies for almost a year now. What I have learned is that if you have a batch of about 30 guppy fry the first ones to get color will start getting a little black at around three weeks old and at about a month old is when the others are soon to follow.