Are paradise fish aggressive?

Do female goldfish have tubercles?

No development of tubercles-Some male goldfish do not develop tubercles even when they reach maturity. While tubercles are the identification of male goldfish, some varieties of female goldfish also develop them.

How can you tell the difference between a male and female Porpoise?

In Dall’s Porpoises, the mature males’ dorsal fins also look different than that of the females and juvenile males. The angle is different as you can see from the images below. This is very, very difficult to discern while in the field however i.e.

How can you tell if a dolphin is male or female?

Pacific White-Sided Dolphins with very young calves whereby it can be concluded the adults at their side are females. ©Jackie Hildering. Presence of a calf beside the mother. BUT this can be difficult to determine unless the calf is really young i.e. it just could be a smaller, unrelated individual travelling with a larger one;

Where is the pectoral fin on a goldfish?

The pectoral fin is located just under and behind the gills. The female’s fin is rounded, and the male’s is longer and more pointed. On the female, the leading edge of the anal fin, located behind the vent, will be thicker. The vent is the anal opening of the goldfish.

What are the little white spots on my Goldfish?

Tubercles. Tubercles are little white spots or bumps that develop on mature male goldfish during spawning. The male will develop these little bumps on their heads and on their gill covers, called operculum. These spots will also be noticeable on the leading edge or ray of the male’s pectoral fins during breeding.

What is the difference between a male and female dolphin?

In the case of the really big dolphins – Killer Whales / Orca – not only are there these differences, but the pigmentation pattern in the pelvic area is different in males and females too, right from birth. Males have a larger area of white than the females do. See below.

What is the shape of a dolphin penis?

“A dolphin’s penis, when erect, is shaped vaguely like a hook, so when males copulate with females, the chance of them being accidentally separated is eliminated. Think of the penis as a key, and the female’s vagina is a lock.

How do Dolphins mate?

They may even attack each other to show which is strongest. When the female dolphin eventually agrees to mate, she approaches with her genitals towards the chosen male. Female dolphins have a vagina and males have a penis and testicles. The female and male interlock with their bellies touching and fertilization n can begin.

Can mirrors pass the mark test?

However, a classic mirror test using marks on the rays’ bodies has yet to be done. If rays can pass a mark test, it’s a more solid indication of self-recognition abilities. The presence of exploratory behavior and a lack of social behavior doesn’t automatically indicate self-recognition.

What is the mirror test for animals?

List of Animals That Have Passed the Mirror Test. The mirror test was developed by psychologist Gordon Gallup Jr.1 in 1970 as a method for determining whether a non-human animal has the ability of self-recognition. It’s also known as the “mark test” or “mirror self-recognition test” (MSR).

Do animals recognize themselves in the mirror?

The presence of exploratory behavior and a lack of social behavior doesn’t automatically indicate self-recognition. If an animal can pass the mirror test, it’s certainly strong evidence of self-recognition, and indicates the possibility of self-awareness (i.e. a “sense of self”).

Can Magpies recognize themselves in the mirror?

Prior to this experiment, scientists believed that self-recognition abilities came from the neocortex, a part of the brain found only in mammals. Since magpies are birds, they do not have this part of the brain. Magpies passing the mirror test shows that the ability of self-recognition can arise from different brain parts in other types of brains.

Can a mirror test prove animal self-recognition?

Scientists have long used a mirror test to evaluate whether an animal is capable of visual self-recognition—and potentially self-awareness.

How do you test if an animal is aware of its reflection?

By placing a dot or mark on a subject, and then placing the animal in front of a mirror, researchers can observe if the creature investigates the mark. Passing the test suggests an animal understands that the marred reflection is a representation of its own marked body, and not just another member of its species.

Do fish have mirror self-recognition?

Researchers have addressed various criticisms and shown the fish L. dimidiatus to indeed have Mirror Self-Recognition, suggesting that either self-awareness in animals or the validity of the mirror test needs to be revised. Credit: Masanori Kohda.

What kind of fish can I put with my fancy goldfish?

Fantail Fancy goldfish have large mouths and will quickly make a meal of very small fish such as Mosquitofish, White Cloud Minnows, and similar. Shrimp will also be regarded as buffet items by hungry Fantails, so you can’t safely include these invertebrates in your setup.

What should I do if my Goldfish has white spot disease?

go to your local pet shop and ask for the appropriate medicine quickly! Your goldfish properly has white spot disease, a very common disease found in goldfish. If left untreated, it WILL have fatal effects. SYMPTONS: The symptons of white spot disease is pretty straight foward.

How big can a dolphin get?

For a comparison, bottlenose dolphins (Flipper was a bottlenose dolphin) can reach lengths of almost 4 meters and weigh up to 600 kilograms! Q. How can you tell the difference between a male and a female dolphin? A. To find this out you have to look underneath the dolphin at it’s belly.

Are dolphins aggressive to each other?

Dolphins engage in acts of aggression towards each other. The older a male dolphin is, the more likely his body is to be covered with bite scars. Male dolphins can get into disputes over companions and females. Acts of aggression can become so intense that targeted dolphins sometimes go into exile after losing a fight.

How big is a dolphin in feet?

Dolphins range in size from the relatively small 1.7-metre-long (5 ft 7 in) long and 50-kilogram (110-pound) bodied Maui’s dolphin to the 9.5 m (31 ft 2 in) and 10-tonne (11-short-ton) killer whale. Dolphins can sometimes leap about 30 feet (9.1 m). Several species of dolphins exhibit sexual dimorphism, in that the males are larger than females.

How do scientists know the shape of a dolphin’s vagina?

One of the ways that scientists know the shape of the dolphin’s vagina is by using 3D silicone molds. Every dolphin species has unique vaginas with different twists, spirals, and folds. For example, female bottlenose dolphins have vaginas with complex spiral shapes. On the other hand, female harbor porpoises have 13 specific folds.

How many folds does a dolphin have?

Every dolphin species has unique vaginas with different twists, spirals, and folds. For example, female bottlenose dolphins have vaginas with complex spiral shapes. On the other hand, female harbor porpoises have 13 specific folds.

What kind of penis does a dolphin have?

The dolphin penis is a fibro-elastic prehensile penis, one of the most dexterous penises in the animal kingdom. As a result, a dolphin can easily grope and swivel its penis to find the entrance to a female dolphin vagina.

Why do Dolphins fight each other?

During mating periods where male dolphins compete with one another to find a mating partner these marine mammals can become aggressive with one another and may try to out perform another through mating rituals or by fighting with eachother.

Do bottlenose dolphins really mate with other dolphins?

But the hard truth is, they do. Bottlenose dolphins are known to gang up on a female of their species, isolate her, then, violently mate with her for several weeks. Guess what? They have even got all the horrible rapist special effects. They make scary noises, movements, and inflict smacks upon her to keep her in line.

Why do animals like looking at themselves in the mirror?

The calming effect in some cases could come partly from the reflection’s apparent mimicking. “The animal confronting its own reflection in a mirror has complete control over the behavior of the image, and therefore the image is always attentive and ready to reciprocate when the animal is,” he and Stuart Capper wrote in 1970.