This final stage usually occurs at just over 14 years of age. Girls will stop growing about 1-2 years after menstruation begins, reaching their full adult height by age 14-15. Breasts and genitals are fully developed at the end of this stage.
http://www.famlii.com/what-age-do-girls-stop-growing-puberty-girls/
Part 2. Determining age by features. 1. Check your betta's fins. Adult bettas have nice and beautiful flowing fins. If your betta has this characteristic, this is a good sign that it is an adult. If it has tiny fins, then it is either a juvenile or a baby. Old betta's fins have wear and tear and may have tiny tears.
http://www.wikihow.com/Tell-How-Old-a-Betta-Fish-Is
Tanner stage five: Final Adult Height and Body. 1  This final stage usually occurs at just over 14 years of age. 2  Girls will stop growing about 1-2 years after menstruation begins, reaching their full adult height by age 14-15. 3  Breasts and genitals are fully developed at the end of this stage.
http://www.famlii.com/what-age-do-girls-stop-growing-puberty-girls/
For the first five weeks the bettas were fed only baby brine shrimp. From five to seven weeks they received a mixture of baby brine shrimp and Grindal worms. Starting with the seventh week they got a mixture of Grindal worms and blackworms. ...One week old: 0.2 inches long.
http://waynesthisandthat.com/bettagrowth.html
For the first five weeks the bettas were fed only baby brine shrimp. From five to seven weeks they received a mixture of baby brine shrimp and Grindal worms. Starting with the seventh week they got a mixture of Grindal worms and blackworms. ...-..Betta egg: 0.03 inches in diameter.
http://waynesthisandthat.com/bettagrowth.html
Increasing the Size of Your Betta. 1  Keep your betta fish in a tank of at least 5 gallons. 2  Replace 50 percent of the water on a daily basis if you want a larger betta. 3  Maintain a tank temperature of 72 to 80 degrees Fahrenheit.  Feed your betta a diet high in protein and fiber.
http://pets.thenest.com/make-bettas-grow-bigger-3705.html
My betta has no hump, but is starting to have cataracts. Some old bettas don't have to have a hump on their back, but cataracts are a good sign of old age. Bettas usually live two to three years, and some can live up to six if taken good care of. Your betta might be in between two and six years old.
http://www.wikihow.com/Tell-How-Old-a-Betta-Fish-Is
Ten weeks old: 1.7 inches long. Eleven weeks old: 1.9 inches long. Final Update: After eleven weeks of growth the amount of week-to-week change is too little to be interesting. From then to seven months of age the betta's body shape stays the same with a very slow increase in size.
http://waynesthisandthat.com/bettagrowth.html
When do Girls Stop Growing? Girls hit their maximum growth spurt before menstruation begins, generally getting their first period around 12 1/2 years of age. Once their period starts, girls typically gain another 1 to 2 inches in height, reaching their full adult height by age 14 or 15.
http://www.famlii.com/what-age-do-girls-stop-growing-puberty-girls/
Keep your betta fish in a tank of at least 5 gallons. Pet stores often sell betta fish in small cups or bowls to save space, since bettas cannot be kept together in a single tank due to aggression toward each other. Replace 50 percent of the water on a daily basis if you want a larger betta.
http://pets.thenest.com/make-bettas-grow-bigger-3705.html
at how old do bettas stop growing
Bettas stop growing at the age of seven months.