FIGURE 7 in Morphology of developing larvae and a dichotomous key for five bubble-nesting Betta species (Teleostei: Osphronemidae)

FIGURE 7. Morphological and pigmentation features of immature stages of Betta smaragdina (KUMF 7069); (a) Newly hatched larva (NL = 2.47 mm); (b) day 1 yolk sac larva (NL = 2.79 mm); (c) day 3 pre-flexion larva (NL = 3.24 mm); (d) day 7 pre-flexion larva (NL = 4.06 mm); (e) day 9 flexion larva (NL = 4.9 mm); (f) day 15 post-flexion larva (SL = 6.50 mm); (g) day 23 post-flexion larva (SL = 7.72 mm); (h) day 40 juvenile (SL = 10.40 mm).