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# Tag: youtube

## Ryo Watanabe Fish

In this video, popular fish YouTuber Ryo Watanabe is featuring the famous Clementi 328 (C328) Fish Store, arguably the best aquarium in the west (along with its neighboring shops in the stretch of Clementi Block 328).

Clementi Block 328 is my favorite fish store. Chances are very high that you can find whatever you are looking for in one of the shops in the stretch. Other than C328, other notable shops in the area include Polyart, and That Aquarium, and more.

Each store there has its own characteristics, they are unique in their own way (the fish/plants/equipment they carry are all different, it is clear they have different suppliers):

**Polyart Clementi: **Large collection of fish, including some saltwater. They do carry plants. Their equipment collection is very extensive, and notably they are cheaper than other Polyart outlets (the uncle will often give you a discount off the stated price without you even asking). I usually buy equipment/medication/anti-chlorine from this store.

**That Aquarium:** Features some of the more exotic fish (I once saw freshwater seahorses, aka pipefish) and shrimp (some black King Kong shrimp or similar that costs up to $100 per shrimp). They do have collection of a lot of “high class” food and equipment that may not be found in other shops.

**C328 Aquarium (featured in Ryo Watanabe Fish Video): **This store is crammed full of fish, plants and equipment. Notably, the plant section is more extensive than other shops in the Clementi 328 stretch, including frequent sightings of Bucephalandra and other rarer plants. Most of my plants are bought here.

**LFS Aquarium: **This store is the first fish store on the left. I have good experience buying their fish, so far their fish tend to be healthy without disease. They have good collection of nano fish, which I am interested in. For example, mosquito rasbora, lambchop rasbora are often spotted in their store. They also have Betta in their community tanks, which means that those Betta are proven to be less aggressive and can live with other fish.

## Ryo Watanabe Fish Video

Ryo Watanabe also does Fish Videos in Japan, where he is based at currently. Ryo Watanabe’s fish videos center on freshwater fish, including aquarium plants and aquascaping.

Related posts:

## The Wisdom Of The Law – Homily by Archbishop William Goh (16 Feb 2020)

Due to the COVID-19 virus, all Catholic masses in Singapore are suspended (till further notice). A YouTube online mass is made available.

## The Map of Mathematics (YouTube)

A nicely done video on how the various branches of mathematics fit together. It is amazing that he has managed to list all the major branches on one page.

Also see: Beautiful Map of Mathematics.

## Proof that Square Root of Two is Irrational [Rare Constructive Proof] (YouTube Video)

This is my second ever YouTube Video, and it is about a rarely seen proof (Constructive) that Square Root of Two is irrational.

The video is based on my earlier post on: Constructive Proof that Square Root of Two is irrational

Thanks for watching! Please speed up the video according to your preference! You can speed up either 2x or 1.5x for best effect.

**Featured Book:**

The Irrationals: A Story of the Numbers You Can’t Count On

The ancient Greeks discovered them, but it wasn’t until the nineteenth century that irrational numbers were properly understood and rigorously defined, and even today not all their mysteries have been revealed. In *The Irrationals*, the first popular and comprehensive book on the subject, Julian Havil tells the story of irrational numbers and the mathematicians who have tackled their challenges, from antiquity to the twenty-first century. Along the way, he explains why irrational numbers are surprisingly difficult to define–and why so many questions still surround them. Fascinating and illuminating, this is a book for everyone who loves math and the history behind it.

## Fourier Series Videos

These are some Fourier Series (learnt in University Maths courses) videos from YouTube. Very interesting and enlightening!

The gist of the theory of Fourier Series is that a function (periodic) can be expressed as an infinite sum of sine and/or cosine functions.

**Featured Book:**

Fourier Analysis: An Introduction (Princeton Lectures in Analysis)

This first volume, a three-part introduction to the subject, is intended for students with a beginning knowledge of mathematical analysis who are motivated to discover the ideas that shape Fourier analysis. It begins with the simple conviction that Fourier arrived at in the early nineteenth century when studying problems in the physical sciences–that an arbitrary function can be written as an infinite sum of the most basic trigonometric functions.

## The story of Pythagoras (Video)

Very interesting video about the story of Pythagoras, including Pythagoras’ Theorem, and why the square root of 2 is irrational!

## Difference of Cubes Video

A geometric interpretation of the Difference of Two Cubes formula.