Betta fish genetics: articles and Course on Betta Genetics
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Betta fish genetics

Genes, genotype, traits, phenotype and the selective breeding program: know how to project your betta

This page is divided into two sections: Articles about betta genetics and our Course on Betta Genetics.


Betta fish genetics articles

(more articles comming soon!)


The unstable multicolored bettas: colors and colors arrange. Betta KOI, Fancy, Monster, Galaxy, Black Mamba, Black Samurai and others

The unstable multicolored: Betta KOI, Fancy, Monster, Galaxy, Black Mamba, Black Samurai and others

Certainly you must have seen on the web or in person bettas named KOI, Fancy, Galaxy, Black Mamba, Black Samurai, Monster and others. And yet, questioned how to obtain them. Bettas with these phenotypes are classified as unstable multicolored. In other words, its visual characteristics (colors and color arrangement, specifically) change spontaneously throughout the life of the betta, which is harmful when it comes to obtaining lineage bettas. [+] More info

como erradicar o traço mármore em ninhadas de bettas

Strategy for eradication of marble trait on bettas phenotype

The betta fish in aquarium is a viable and fertile hybrid of the cross between different pure species belonging to the Splendens species group. From those mating between the aforementioned species, many different characteristics have emerged in the DNA of these hybrids that we have today. And what is the surprise resulting from the crossing of this new specimen? Individuals marbling all over the phenotype, destroying all that work that was being done for you.

a cor vermelho sangue nos bettas

Blood red color in Bettas: a new pigment

For the blood red coloring of the first Bettas Red Dragon there would be a new hypothesis: a different model from the traditional cherry red. This was confirmed when this red started to appear in some bettas, along with the traditional yellow, chocolates and pineapples.

o que são bettas de linhagem

What are lineage bettas?

Many people have mistakenly assigned the term lineage betta to specimens that do not actually have lineage. This article aims to clarify this concept. [+] More info

Fish Selective Breeding

What is selective breeding of ornamental fish?

Understanding this concept is very important when you want to go one step further than breeding bettas. This is what you will do to create bettas of Superior Genetics.


Course on Betta Genetics


Betta Project - Course on Betta Genetics 2.0

The betta selective breeding in your hands!
A course that teaches you step by step

Course goals

A simplistic answer

This course teaches everyone how to predict and calculate the probability of occurrence of each visual characteristic of the betta (colors, color arrangement and formats).

Our response to the content of our course

The genetic improvement of bettas, the result of work carried out through selective breeding, only occurs when there is information and knowledge. From this philosophy, stable lineages and prediction of possible traits in the phenotype can arise. A great desire among betta breeders worldwide is to obtain quality litters: high aesthetic beauty, stability of these characteristics and a certain degree of aggressiveness.

This course will teach you how to identify possible genotypes and even arbitrate or define them, when they are unknown before your tests or proven through your genetic work, respectively.

In addition to the existing standards, we can also create a new lineage, provided that:


A brief presentation



Genetic improvement of ornamental fish: the study of Betta Fish

Betta genetics are held to be a secret. Commercial interests may be involved in your domain, promoting bettas of higher quality for some breeders.

Our long-term objective consists in the dissemination of information for the genetic improvement of the betta breeding stock, this knowledge is essential for you who are betta breeder and want to enhance the aesthetic beauty of your specimens.

As naturally occurs in science, where researchers complement previous studies, promoting the evolution of human knowledge, we present everything that is thought to know about betta genetics for selective breeding.

Learn how to design your Bettas. There are endless possibilities for colors, as well as countless formats. NOTE: photos are merely illustrative.

The course is presented in recorded video lessons, in the online course format, where you will carry out the study independently.

How this course will help you

We bring a collection of tools through new and renowned genetic modeling, essential for greater understanding and generation of results in betta creations.

Undoubtedly, the material displayed here contributes to the betta world.

Know the traits, workable characteristics of bettas and their genotypes to guide you in the selective breeding of bettas, aiming at Bettas with Superior Genetics.

I want to join now

The Instructor

Vitor Calil Chevitarese will guide you in learning.
He started handling bettas in 1965.
From the 1970s onwards, he began to dedicate himself to management aiming at the genetic improvement of his bettas.
He is a hobbyist, Brazilian breeder, engineer and entrepreneur. He is still dedicated to the study of betta genetics.

General information
What is it

The Course on Betta Genetics 2.0 is the only one that teaches you how to design your Betta. Available in the form of short videos that segment all content, it has more than 5.5 total hours in video lessons.

Our Course on Betta Genetics 2.0 is in English.

Author Vitor Calil Chevitarese, betta breeder since 1965 and scholar of its genetics.
Content Module 1: Basic concepts on Genetics [+] More info
It consists of an introductory class on genetics, its precepts, elements and forms of transmission. Also learn how to use the Punnett Chart, which will be used extensively in this course for calculating probability.

Module 2: The iridescent color layer [+] More info
Introduces the module with workable characteristics in the Bettas phenotype. It presents the theoretical model of color layers in Bettas. Detailed the traits controlled by the iridescent layer and make a detailed discussion about each one.

Module 3: The black color layer [+] More info
A complete approach to traditional melanic traits, with increased melanophores. Also a study on the super blacks, showing the characteristics and peculiarities of each one and their interrelationship. Find out also how the existence of the gene that alters the distribution of chromatophores (the marble gene) and its complications in the search for high genetic standard Bettas behaves in the phenotype.

Module 4: The red and yellow color layers [+] More info
Understand how the extended red and red loss traits and their approximation with the marble trait appear in the phenotype. An unprecedented modeling on non-reds you will study in this module, explaining how colors in the pink, orange, red, pineappple, chocolate and yellows Bettas phenotypes, showing their interrelationships and how to obtain them.

Module 5: Bettas fins [+] More info
Identification, structures, branches, abbreviations and discussions about the betta’s fins are covered in this module. Flow format and technical details. Caudal and dorsal peduncles: their importance. Types of fins edges; the ideal relationship in Betta crowntail in terms of aesthetics. The rose tail and feather tail lines, their particularities and aesthetic balance.

Module 6: Masks in Bettas [+] More info
The problem of the current classification of masks in Bettas is accepted among creators. New modeling proposal on the types of masks in Bettas: without mask, partial mask, full mask and their intermediate states; crossing between these and their probabilities of occurrence.

Module 7: The Giant Bettas [+] More info
From the study in 2011 carried out by the author, the characteristics and concepts that should be considered in obtaining giant bettas are presented.

Module 8: A methodology for assembling a new line of bettas [+] More info
All genotypes covered in the course are integrated. The methodology is presented in order to assemble new strains by matrices selection.
  • Know the color formation process in bettas;
  • Understand the interrelationship between the different genotypes and their effects on the phenotype;
  • Learn to develop works aiming to obtain matrices of superior genetics;

Unconditional 7-day warranty from payment clearing

How to join

The course fee is USD 97,- for 12 months of access.
Course hosted on the Hotmart platform.
By registering for the course, you will be accepting our terms and conditions.
Please read it carefully before joining the course.

Join without any commitment.
If you don't like it, we will refund your money within the first 7 days after the payment is cleared.

Join now the Course on Betta Genetics 2.0 (English language) clicking here


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