356
'
THE BIOLOGY OF FISHES
specialised oshoots. It is the practice among them all
_
to rise to the surface and take in gulps of air, and in all,
especially the males, the lips are thick and swollen.
-
'
…
The nest building of the Rainbow Fish (Trichogaster,
'
Fig. 68, p. 271) was carefully studied and described by
Carbonnier as long ago as 1875.
“
As the spawmng time
approaches, the male, spreading his brilliant ns, plays round
the female, showingher his bright colours; with his long ,
ventral laments he pats and touches her in all directions,
until over—excited by his caresses, she takes to ight. I
believe that all these graceful movements of the male sh,
all these amorous— proceedings, inuence the physical condi- =
,
tion of the female and aid the maturation of the eva.
,
’
“
The male shggthen commences the preparations for ’
oviposition.
“a little Conferva in his mouth, he
'
"carries—' it to the surface of the water.
The plant, from its
greater density, would fall back very rapidly to the bottom;
_
but our little '-"workman sucks ina—few bubbles of air, which
divides_ and places immediately beneath the plants ;so '
as
to
prevent them from .desceding; He repeats— this
'
process several times, and thus in the rst day forms“ra
çoating island 8 centinietres in diameter.' The bubbles-of .. -, ,
fair are-hot coated with a greaSy liquid as in the case of»theÏ
“sh of
viridi-auratus ;
all those
'
'
"which approachÏ-sucieny'to touch, unite together and fuse—.
'
_
;
-_'
_
,
_
_
…
..
j
“ Thenext day. the
ContinueS his provision ofaù-,
'
ÏWhiçh
_
towards }the. Central ;p'oint.
_
These bubbles
—aipressure {roma below
the
_,
consequenœof WhJCh
{the… éleväi0f; oftheÎ'v6getable disk,
,
leonVerted- intoi—a
sort 0fdomeoaü%cnùesurface
*
-
i
neSfîbelngcompleted0utwardly,the sh :busies
'
h1mselleth g1vmg1t a1mnesswhrchina—y, protect it frdm
"
1
all diœc—
'
the surfaces ; he
PÎÈËSÊS
felthth}usmuZZ1€and his chest. _—If
*0n9" 9fî'Îheîmîg'3ïË ”fQÏÔ 'promineÏnt,ghefseizesit ad-remove”s it
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