FIGURE 8 in Morphology of developing larvae and a dichotomous key for five bubble-nesting Betta species (Teleostei: Osphronemidae)

FIGURE 8. Morphological and pigmentation features of immature stages of Betta splendens (KUMF 7070); (a) Newly hatched larva (NL = 2.45 mm); (b) day 1 yolk sac larva (NL = 2.69 mm); (c) day 3 pre-flexion larva (NL = 2.86 mm); (d) day 7 preflexion larva (NL = 3.42 mm); (e) day 9 flexion larva (NL = 3.59 mm); (f) day 15 post-flexion larva (SL = 5.58 mm); (g) day 18 post-flexion larva (SL = 6.24 mm); (h) day 40 juvenile (SL = 11.78 mm).