# What is a fish number?

The number 153 is associated with the geometric shape known as the Vesica Piscis or Mandorla. Archimedes, in his Measurement of a Circle, referred to this ratio (153/265), as constituting the "measure of the fish", this ratio being an imperfect representation of 1/√3.

## What is fish number 7?

Fish number 7 (F7), is a number defined by Japanese googologist Fish in October 2013. It is the largest of the seven Fish numbers. It is based on an extension of Rayo's number. was used to make Rado's sigma function larger.

## What is bigger than fish number 7?

Jonathan Bowers created two numbers, Oblivion and Utter Oblivion, which diagonalize over the fundamental concept of a mathematical system as a whole, and claimed that they were larger than both BIG FOOT and Rayo's number, as well as Fish number 7.

## Why do humans pick the number 7?

But we also have religious reasons for thinking that 7 is special – think: seven deadly sins and seventh heaven. In nature, you have the seven wonders of the world, seven colours of the rainbow, seven seas and seven continents.

## How much is Rayo's number?

Rayo's number: The smallest number bigger than any number that can be named by an expression in the language of first order set-theory with less than a googol (10100) symbols.

## What is the fish demon?

Inimicus didactylus, also known as sea goblin, demon stinger or devil stinger, is a Western Pacific member of the Inimicus genus of venomous fishes, closely related to the true stonefishes. It can reach a body length of 25 cm (10 in) and is irregularly surfaced with spines and a knobby appearance.

## Are fish good at math?

A new study from the University of Bonn in Germany has yielded an unexpected finding – that cichlids and stingrays can perform simple addition and subtraction in the number range of one to five.

## How do you read a fish chart?

All you need to do is look for an icon on the screen, read the depth at which the icon is displayed, and cast! It's so simple. If you see a large rock on your Fish-ID fish finder, and expect a certain species to be found around there, then that's where you would cast.

## How do you calculate fish?

Formulas
1. bass weight = (length x length x girth) / 1,200.
2. pike weight = (length x length x length) / 3,500.
3. sunfish weight = (length x length x length) / 1,200.
4. trout weight = (length x girth x girth) / 800.
5. walleye weight = (length x length x length) / 2,700.

## What are the 5 classes of fish?

There are about 28,000 existing species of fish, and they are placed in five classes: hagfish, lampreys, cartilaginous fish, ray-finned bony fish, and lobe-finned bony fish.

## What are the 3 types of fish?

Fishes are typically divided into three groups: superclass Agnatha (jawless fishes), class Chondrichthyes (cartilaginous fishes), and superclass Osteichthyes (bony fishes).

## What is the highest IQ of a fish?

For fish, that title goes to manta rays. They're giant, charismatic and basically geniuses. Mantas have huge brains — the biggest of any fish — with especially developed areas for learning, problem solving and communicating.

## What IQ is a fish?

There is no way to get conclusive evidence that one fish is the smartest. What is the IQ of a goldfish? Their IQ lies between 30 and 40. If you're comparing their IQ to conventional standards, it is not very high, especially when a freshwater salmon has an IQ as high as 130.

## What is the Jesus fish symbol in math?

The ichthys or ichthus (/ˈɪkθəs/), from the Greek ikhthū́s (ἰχθύς, 1st cent. AD Koine Greek pronunciation: [ixˈθys], "fish") is (in its modern rendition) a symbol consisting of two intersecting arcs, the ends of the right side extending beyond the meeting point so as to resemble the profile of a fish.

## Who is the 5th demon?

The Lower Rank 5 Demon Rui was a huge pain for Tanjiro to fight against. This demon's threads were extremely powerful and had all but killed both Tanjiro and Nezuko in battle. However, Rui was no match against the might of a real Hashira.

## What is a nightmare fish?

This 'nightmare' fish washed up on a U.S. beach

The deep-sea “football fish” or angler fish, has rows of spiked teeth and a bioluminescent lure that hangs over its head to attract prey. The species normally lives hundreds of metres deep in the ocean, where sunlight does not penetrate.

## Do fish cry?

The cerebral cortex and limbic system are absent in fish. Cerebral cortex, which is what permits other animals to cry.

## Do fish have feelings?

Nerves, brain structure, brain chemistry and behaviour – all evidence indicates that, to varying degrees, fish can feel pain, fear and psychological stress.

## Which animal has high IQ?

CHIMPANZEES. RECKONED to be the most-intelligent animals on the planet, chimps can manipulate the environment and their surroundings to help themselves and their community.

## Can fish feel pain?

“Fish do feel pain. It's likely different from what humans feel, but it is still a kind of pain.” At the anatomical level, fish have neurons known as nociceptors, which detect potential harm, such as high temperatures, intense pressure, and caustic chemicals.

## Do fish get thirsty?

As well as getting water through osmosis, saltwater fish need to purposefully drink water in order to get enough into their systems.

## Do fishes have memory?

Despite differences in brain size and form, fish have been scientifically proven to have memories lasting months, perhaps even years, as well as the ability to recognise and consciously avoid pain and danger, seek out reward, navigate mazes, and even use tools.

## Do fish have 3 hearts?

It is said to be a royal among sea animals because it has blue blood, literally. And the cuttlefish has a large heart. Actually, it is not one but three hearts.

## Do fish have sexes?

You can determine the sex of your fish by inspecting its gonads (reproductive organs), which are located towards the top of the gut cavity. Mature female fish will have orange ovaries and male fish will have white testes (see photos above).
Previous question
Why do dogs guard you while you pee?
Next question
What's inside a black hole?