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Description
Red Laser Tetra Hemigrammus Coeruleus 3cmRed Laser Tetra Hemigrammus Coeruleus 3cm Overview: The Red Laser Tetra (Hemigrammus Coeruleus) is a stunning addition to any freshwater aquarium. With its vibrant red coloration and striking iridescent markings, this species adds a pop of color and liveliness to community tanks. Origin: Originally from South America, these tetras are commonly found in the clear, slow moving waters of the Amazon River basin. Feeding: They are omnivorous and readily
Red Laser Tetra Hemigrammus Coeruleus 3cmOverview: The Red Laser Tetra (Hemigrammus Coeruleus) is a stunning addition to any freshwater aquarium. With its vibrant red coloration and striking iridescent markings, this species adds a pop of color and liveliness to community tanks.
Origin: Originally from South America, these tetras are commonly found in the clear, slow-moving waters of the Amazon River basin.
Feeding: They are omnivorous and readily accept high-quality flake food, as well as live and frozen varieties such as bloodworms and brine shrimp. A varied diet ensures their health and color vibrancy.
Tank Mates: Red Laser Tetras are peaceful schooling fish, thriving in groups of six or more. They coexist well with other peaceful community fish like other tetras, rasboras, small peaceful catfish, and non-aggressive dwarf cichlids.
Aggression: These tetras are known for their peaceful nature and lack of aggression, making them ideal for community tanks. They exhibit no territorial behaviors and are not prone to fin-nipping.
Experience Level: Suitable for aquarists of all experience levels, including beginners. Their hardiness and adaptability to various water conditions make them an excellent choice for both novice and seasoned hobbyists.
Water Parameters: Maintain a pH range between 6.0 to 7.5 and a temperature between 72°F to 78°F (22°C to 26°C). A well-filtered tank with regular water changes helps keep these tetras healthy and thriving.
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4.7 ★★★★★
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Product Reviews
★★★★★ 5
good book for beginners in Python and in simulation
Format: Kindle
Author made very short and simple intro into Python to jump into many different code examples to show how to solve them and to visualize results in Python. Reader will learn how to use Python libraries for modeling and simulation. Each example has an analytical solution and numerical with Python and visualization tools
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Reviewed in the United States on January 2, 2026
★★★★★ 5
would highly recommend
Format: Paperback
well written even a newbie can follow
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Reviewed in the United States on May 18, 2025
★★★★★ 5
great book
Format: Paperback
perfect for beginners
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Reviewed in the United States on March 22, 2024
★★★★★ 2
Don't buy, check HIS github or google collab for EVERYTHING that's in this book. NO SOLUTION
Format: Paperback
I never write reviews, but after this book I need to. DON'T BUY IT. DO NOT BUY THIS BOOK. Feels like a money grab. You are literally paying money for NOTHING buying this book. Long story short: GO TO HIS GITHUB AND GET IT ALL FOR FREE BECAUSE HE DOES NOT PROVIDE SOLUTIONS. GO ON GITHUB OR GOOGLE COLLAB AND CALL IT A DAY.
In the intro he makes it seem like you don't need to know much programming or any tbh. He says if you have never programmed you should be able to read this book. HELL NO, I mean yeah you could probably figure it out, but I would not let someone that doesn't know any programming to start with this. I'd probably tell you to learn the basics of python for a week before starting at the very least.
He also makes it seem like you don't need much knowledge of physics. Meh, maybe.
Anyway the main reason not to buy: IT'S ALL AVAILABLE FOR FREE ON GITHUB THAT HE PUBLISHES FOR FREEEEEE. You can also use google collab, which he has up for FREEE. and if you are are a beginner I'd recommend you go off teh google collab, that way you don't have to deal with downloading anaconda and setting up an enviroment in jupyter which I think can be intimidating for a beginner. And this book doesn't really give much help in setting up everything in jupyter notebook.
Also another point. He'll lead you through an example each lesson, but for the exercises he has you working on he doesn't provide a solution ANYWHERE. like why tf would you buy this book? How do you expect to learn with no feedback? You need to search online for ways to solve these problems, which I think is not a bad skill to have, but if you are new to a subject or trying to learn and you pay for a book why can't i at the very least get some solutions. even math textbook give you solutions, because the understanding is that you can make your own attempt and CHECK TO SEE IF YOU ARE RIGHT. DUHH !
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Solid Metal Razor
Color: Polished Silver
I’ve been using this for months to clean up for light dermaplaning, and I really like it. The metal handle feels solid and easy to control, which makes it feel safer than the cheap plastic razors. The blades are sharp but gentle if you use a light hand.
It also comes with a lot of replacement blades, which is nice since you don’t have to replace the whole razor and it saves you a ton of money. It took me a try or two to get used to the weight, but now I prefer it. Overall, it feels well-made and works exactly as expected.
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Reviewed in the United States on January 5, 2026