Template:Medaka timeline table
From Embryology
Stage | Time | Event |
0 | Unfertilized eggs | |
1 | 3 min | Activated egg |
2 | Blastodisc | |
3 | 1 h 5 min | 2 cell |
4 | 1 h 45 min | 4 cell |
5 | 2 h 20 min | 8 cell |
6 | 2 h 55 min | 16 cell |
7 | 3 h 30 min | 32 cell |
8 | 4 h 5 min | Early morula |
9 | 5 h 15 min | Late morula |
10 | 6 h 30 min | Early blastula |
11 | 8 h 15 min | Late blastula |
12 | 10 h 20 min | Pre-early gastrula |
13 | 13 h | Early gastrula |
14 | 15 h | Pre-mid-gastrula |
15 | 17 h 30 min | Mid-gastrula |
16 | 21 h | Late gastrula |
17 | 1 day 1 h | Early neurula (head formation) |
18 | 1 day 2 h | Late neurula (optic bud formation) |
19 | 1 day 3 h 30 min | 2 somite |
20 | 1 day 7 h 30 min | 4 somite |
21 | 1 day 10 h | 6 somite (brain regionalization and otic vesicle formation) |
22 | 1 day 14 h | 9 somite (appearance of heart anlage) |
23 | 1 day 17 h | 12 somite (formation of tubular heart) |
24 | 1 day 20 h | 16 somite (start of heart beating) |
25 | 2 days 2 h | 18–19 somite (onset of blood circulation) |
26 | 2 days 6 h | 22 somite (development of guanophores and vacuolization of the notochord) |
27 | 2 days 10 h | 24 somite (appearance of pectoral fin bud) |
28 | 2 days 16 h | 30 somite (onset of retinal pigmentation) |
29 | 3 days 2 h | 34 somite (internal ear formation) |
30 | 3 days 10 h | 35 somite (blood vessel development) |
31 | 3 days 23 h | Gill blood vessel formation |
32 | 4 days 5 h | Somite completion (formation of pronephros and air bladder) |
33 | 4 days 10 h | at which notochord vacuolization is completed |
34 | 5 days 1 h | Pectoral fin blood circulation |
35 | 5 days 12 h | at which visceral blood vessels form |
36 | 6 days | Heart development |
37 | 7 days | Pericardial cavity formation |
38 | 8 days | Spleen development (differentiation of caudal fin begins) |
39 | 9 days | Hatching |
40 | 1st fry | |
41 | ||
42 | ||
43 | ||
44 | ||
45 |