THIRTEENTH ANNUAL REPORT Ta 
Phase 4. Body dusky brown, heavily mottled everywhere— 
a phase connected with fright (see plate opposite page 392, 
American Food and Game Fishes.) 
The above are the principal phases to be seen any day, but there 
are several variations. 
TiceER RockFisH, (Mycteroperca tigris). Two phases are 
usually to be seen at the same time among the specimens in the 
exhibition tank. In one the general coloration is brownish, the 
bands which distinguish the species being pale and indistinct. 
Most of the brown effect is produced by very numerous brown 
spots everywhere. 
In the other phase the body is almost black, the bands are 
pure white, and there is more or less white mottling on the tail. 
This coloration is the one assumed when the fishes are disturbed. 
Vv 
BiuE Tane, (Teuthis coeruleus). There are two striking 
phases of coloration assumed by this species, one a bright blue, 
the other pure creamy white. In the latter there may be at 
times faint bluish margins to all the fins except the pectorals. 
The blue phase is the one usually seen, since it 1s assumed 
whenever the fish is in the least disturbed by visitors passing the 
tank, and this lasts ail day long (fig. 2, plate 9). 
The other phase is seldom seen until the building is free from 
visitors, then the fish may settle down toward the white sand 
bottom and take on a ghostly whiteness (fig. 1, plate 9), but any 
disturbance instantly brings back the blue color. 
No amount of experiment in the photographic tank ever pro- 
duces anything but an intensely blue fish. The figure showing 
the white phase (plate 9) was made with the help of the en- 
eraver from a photograph of a blue specimen, it being impossible 
to photograph it. 
‘Y Doctor Fisu, (Teuthis hepatus). Pale phase; Pale white in- 
cluding pectorals and dorsal, the caudal and lower fins faintly 
bluish on the edges. Vertical bands faint. 
Dark phase: Very dark, blue of fins almost obscured. A white 
band around caudal peduncle behind lancet. Vertical bands very 
dim. 
Olive phase: Body and fins pale olive. Vertical bands sharp 
and distinct. Mouth white. 
Coney or Niccer Fisu, (Bodianus fulvus). This species is 
subject to many and frequent changes in appearance. A com- 
mon resting color, shows the upper third of head and body very 
