You may be curious to know how long a fighter fish fry can grow week-by-week till it reaches its adulthood. Below is a growth chart of a betta fish which shows how it grows from egg to adulthood.
|
Growth Period |
Length |
| Egg | 0.03 inches in diameter |
| 1 day old fighter fish fry | 0.1 inch |
| 1 week | 0.2 inches |
| 2 weeks | 0.25 inches |
| 3 weeks | 0.34 inches |
| 4 weeks | 0.45 inches |
| 5 weeks | 0.6 inches |
| 6 weeks | 0.85 inches |
| 7 weeks | 1.1 inches |
| 8 weeks | 1.3 inches |
| 9 weeks | 1.55 inches |
| 10 weeks | 1.7 inches |
| 11 weeks | 1.9 inches |
Once the betta fish fry becomes 11-week-old, its growth rate steadily declines. By the time it becomes 7-month-old, its fins grow to their full length. When it completely grows into an adult, it will be of 3 – 4 inches in length. But one thing you must keep in mind that various factors such as food types, tank size, hygienic conditions, health etc affect the growth of a fighter fish fry.

