1. Week 10: Acanthopterygii Atherinomorpha Percomorpha Beryciformes
Gasterosteiformes

2. Gasterosteiformes ~280 sp bony circular plates no scales oviparity
external fertilization

3. Gasterosteiformes
monophyletic end branch

5. most ancestral
NEAq
NEAq

6. Gasterosteidae 2 to 9 dorsal spines independent ~pelvic ~anal
narrow peduncle
longitudinal keels
four-spine stickleback
Apeltes quadracus
nine-spine stickleback
Pungitius pungitius

7. brackish freshwater N. Hemisphere marine nearshore ~ 3 in.
nine spine stickleback
Pungitius pungitius

8. 9-day old kingfisher chicks
swallow sticklebacks whole...
NG 11/09

9. three spine stickleback Gasterosteus aculeatus
courtship
aggression
parental care
nest building/
kidney glue

10. Gasterosteiformes
monophyletic end branch
NEAq

11. extended snout w/out teeth
vertical position

12. Macroramphosidae Centriscidae Pegasidae
snipefishes shrimpfishes sea moths
~5 sp.
tropical temperate
Indo-Pacific
Macroramphosus graciliis Aeoliscus strigatus
ww tropical IndoPacific
NEAq

13. “more derived”
trumpetfish
pipefish
no pelvic fin
small anal fin

14. Aulostomidae trumpetfishes ~3 sp. Syngnathidae Aulostomidae NEAq
extended snout
protrusible mouth
Aulostomidae
Aulostomus sp.

15. top reef predators
Pacific trumpetfish
Aulostomus chinensis

16. barbel
Pacific trumpetfish
Aulostomus chinensis
reef riders

17. Syngnathidae pipefishes ~200 sp. no teeth protrusible mouth
broadnose pipefish
Syphonostoma typhale
no teeth
protrusible mouth

18. marine pipefish
freshwater
pipefish

19. male body brooding elaborate courtship ~monogamy
straight nose pipefish
Nerophis ophidion

20. Australian seadragons ~25 sp.
Syngnathidae
Australian seadragons
~25 sp.
epidermal extensions

21. weedy seadragon
Phyllopteryx taeniolatus
leafy seadragon
Phycodorus eques

22. male body brooding
male leafy sea dragon Phycodorus eques

23. Syngnathidae seahorses ~36 sp. Hippocampus sp. vertically oriented
female lined seahorse
Hippocampus erectus
vertically oriented
no pelvic fins
prehensile tail
sealed brood pouch

24. distensible snout prehensile tail

25. Syngnathidae
seahorses
H. ramulosus

26. spotted H. abdominalis
with 3 H. breviceps

27. sealed brood chamber
H. whitei
elaborate courtship
monogamy

28. H. breviceps male with brood 2 to 4 weeks ~ ~births 10-1000 live young
temperature
hormone prolactin
(mammal milk production)

29. Tarpon Springs, FL,
H. hudsonius souvenir

30. pygmy seahorses
Solomon Islands

31. pygmy seahorses