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Isamu Yoshida

@isamuyoshidaa

Language: EnglishCountry not available4 months old

  • Persona: Isamu Yoshida · Expert · Senior
  • Sells · $29 guide
  • Aquarium
  • Fishkeeping
  • Aquarium plants
  • Aquarium filters
  • Fish health
  • Budget hobby
  • DIY aquarium
Subscribers
28.1K
Total views
1.57M
Videos
73

Stats updated Stats from YouTube

Growth

Subscribers · daily totals we stored, UTC days

Dotted: 2 days without a fresh subscriber total stored in this range. Left out, not filled in.

Show the numbers
Subscribers per UTC day, last 30 days, newest first
Day (UTC)Subscribers
Oct 14, 202628,100
Oct 13, 202627,900
Oct 12, 202627,700
Oct 11, 202627,400
Oct 10, 202627,200
Oct 9, 202627,100
Oct 8, 202626,800
Oct 7, 2026not available
Oct 6, 2026not available
Oct 5, 202626,400
Oct 4, 202626,100
Oct 3, 202625,900
Oct 2, 202625,600
Oct 1, 202625,400
Sep 30, 202624,900
Sep 29, 202624,800
Sep 28, 202624,500
Sep 27, 202624,200
Sep 26, 202624,000
Sep 25, 202623,700
Sep 24, 202623,400
Sep 23, 202623,000
Sep 22, 202622,700
Sep 21, 202622,300
Sep 20, 202620,600
Sep 19, 202621,600
Sep 18, 202621,000
Sep 17, 202620,900
Sep 16, 202620,300
Sep 15, 202620,200
Sep 14, 202619,800

Top videos

Most viewed

What they sell

From the public store pages the channel links to, checked Oct 13, 2026.

How they sell it

  1. 1Video
  2. 2DescriptionFirst line: Save $1,400 A Year with the aquarium methods, linking isamuyoshida.com
  3. 3Landing pageGumroad · Long sales page for the 381-page manual at $29, with a $127 value stack · isamuyoshida.com
  4. 4Landing pageGumroad · Gumroad listing: 381-page First Edition, $29, 7-day money back guarantee · isamuyoshida.gumroad.com
  5. 5CheckoutGumroad
  • Store link in 97% of recent descriptions
  • Link in descriptions since Jul 16, 2026
  • Entry points: the About page, the first line of descriptions, the description body

Almost every recent description opens with a line promising to save $1,400 a year and a link to isamuyoshida.com, which is also the channel's e-book about link. That page sells The Japanese Aquarium Manual, a 381-page illustrated PDF with 52 methods, for one payment of $29 against a listed $127 separate value, and sends buyers to a Gumroad listing, The Aquarium Manual, with a 7-day money back guarantee and instant PDF delivery. No email sign-up or membership is offered.

Analysis

Our own reading of the channel’s public titles, descriptions and thumbnails, not data from YouTube.

Persona

Isamu Yoshida

Expert · Senior · Male · Beside a planted aquarium against a plain teal backdrop

Niche

Cheap 'Japanese way' aquarium fixes instead of fish-store products

Audience

Home aquarium keepers, especially beginners, who want to spend less on fish-store products and fix common tank problems with cheap kitchen and garden items (inferred from titles and descriptions; the channel has no about text).

Avatar
  • Realistic avatar
  • A photorealistic elderly man with short grey hair and wire glasses, in a dark navy work jacket, shown waist-up beside a planted aquarium, usually holding a kitchen item over the water.
Format

One aquarium problem per video: what the fish store sells for it, then a numbered countdown of cheap kitchen, garden or DIY alternatives done 'the Japanese way'.

Content pillars
  • Cheap food and treatment swaps
  • Filters and clear water
  • Aquarium plants
  • Fish health and disease
  • Tank setup and placement
  • Mistakes fish stores profit from
Title patterns
  • Stop Buying [product] — [Feed Your Fish / Use] This Instead (Japanese Way)
  • [N] [Easy / Simple] [Tricks / Secrets] That Will Save Your Aquarium [X] (Japanese Way)
  • [N] Cheap [Items / Swaps] That [benefit] (Japanese Way)
  • STOP [doing X] - Try These Japanese Tricks
  • [X] Vs [Y] Which [Filters Aquarium / Is] Best
Thumbnails

The persona waist-up on the right, dropping a piece of a kitchen item into a planted tank while holding the rest, with a two-line caption top left: white ONE [ITEM] over a yellow bar naming the benefit, on a teal background.

Why it works
  • One repeatable angle: 19 of the 30 newest titles invoke a Japanese method, 15 with the tag 'Japanese Way'
  • Money-saving hook: 10 of 30 titles start with Stop, 7 of them 'Stop Buying [X]', led by 110,219 views; every description opens on saving $1,400 a year
  • Several hits rather than one: 4 videos above 110,000 views, and the top 10 hold about 63% of 1,374,014 total views
  • Fast recent growth: 9,700 subscribers and 782,682 views gained in the last 30 days, at about 5 uploads a week
  • A fixed thumbnail template: the ONE [ITEM] caption and the same dropping pose in 6 of 10 thumbnails

Similar channels

Same niche or the same kind of persona, from the library.

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Stats from YouTubeLast updated Channel and video data from YouTube (YouTube Terms of Service (opens in a new tab)). The analysis is ours, not data from YouTube.