This rather unique ball is used in the final chapter of the epilogue. It is lighter than air, and is used to lift the telescope into space.

<ball name="Fish"
      shape="circle,80,0.25"
      mass="20"
      towermass="5"
      strands="1"
      walkspeed="0"
      climbspeed="0"
      speedvariance="0.2" 
      antigrav="14"
      dampening="0.115"
      grumpy="true"
      collideattached="true"
      statescales="attached,1.65, detaching,1.3"
      suckable="false"
      jump="0.0,0.4"
      maxattachspeed="1000"
 
	  climber="false"
 
	  jumponwakeup="true"
	  staticwhensleeping="true"
 
	  invulnerable="true"
 
	  hideeyes="false"
	  blinkcolor="0,0,0"
 
	  detachable="false"
      >
 
  <marker drag="IMAGE_BALL_FISH_DRAGMARKER_P1" 
          detach="IMAGE_BALL_FISH_DRAGMARKER_P1" 
          rotspeed="2"/>
 
  <strand type="rope" 
          image="IMAGE_BALL_FISH_STRING3" 
          inactiveimage="IMAGE_BALL_FISH_INACTIVE" 
          springconstmin="2" springconstmax="2" 
          dampfac="0.002" 
          maxlen2="380" maxlen1="500"
		  shrinklen="160"
          maxforce="800"
          minlen="150"
          walkable="false"
          thickness="10"/>
 
 
  <splat image="IMAGE_BALL_FISH_SPLAT1,IMAGE_BALL_FISH_SPLAT2"/>
 
 
  <part name="wingLeft" layer="0" 
        x="-64" y="0,0"
        image="IMAGE_BALL_TIMEBUG_WINGLEFT"
        scale="1"
        rotate="false"
		state="attached"
        />
  <part name="wingRight" layer="0" 
        x="64" y="0,0"
        image="IMAGE_BALL_TIMEBUG_WINGRIGHT"
        scale="1"
        rotate="false"
		state="attached"
        />
 
  <part name="body"
        layer="1"
        rotate="true"
        x="0" y="0"
        image="IMAGE_BALL_FISH_BODY"
        stretch="32,2,0.5"
        scale="1.15"
        />
 
 
 
	<part name="lefteye"
        layer="2"
        rotate="true"
        eye="true" 
        pupil="IMAGE_BALL_GENERIC_PUPIL1"
        pupilinset="13"
        x="-18,-12" y="0,7"
        xrange="-20,-10" yrange="-12,12"  
        image="IMAGE_BALL_GENERIC_EYE_GLASS_1,IMAGE_BALL_GENERIC_EYE_GLASS_2,IMAGE_BALL_GENERIC_EYE_GLASS_3"
        scale="0.6"
		state="climbing,walking,falling,dragging,detaching,standing,tank,sleeping,stuck,stuck_attached,stuck_detaching"
        />
  <part name="righteye"
        layer="2"
        rotate="true"
        eye="true" 
        pupil="IMAGE_BALL_GENERIC_PUPIL1"
        pupilinset="13"
        x="12,18" y="0,7"
        xrange="10,20" yrange="-12,12"
        image="IMAGE_BALL_GENERIC_EYE_GLASS_1,IMAGE_BALL_GENERIC_EYE_GLASS_2,IMAGE_BALL_GENERIC_EYE_GLASS_3"
        scale="0.6"
		state="climbing,walking,falling,dragging,detaching,standing,tank,sleeping,stuck,stuck_attached,stuck_detaching"
        />
 
	<part name="lefteyeStuck"
        layer="2"
        rotate="true"
        eye="true" 
        pupil="IMAGE_BALL_GENERIC_PUPIL1"
        pupilinset="13"
        x="-54,-54" y="0,0"
        xrange="-64,-22" yrange="-12,12"  
        image="IMAGE_BALL_GENERIC_EYE_GLASS_1,IMAGE_BALL_GENERIC_EYE_GLASS_2"
        scale="1.0"
		state="attached"
        />
  <part name="righteyeStuck"
        layer="2"
        rotate="true"
        eye="true" 
        pupil="IMAGE_BALL_GENERIC_PUPIL1"
        pupilinset="13"
        x="54,54" y="0,0"
        xrange="22,64" yrange="-12,12"
        image="IMAGE_BALL_GENERIC_EYE_GLASS_1,IMAGE_BALL_GENERIC_EYE_GLASS_2"
        scale="1.0"
		state="attached"
        />
 
 
  <!-- attached animations -->
  <sinvariance freq="0.3" amp="0.02" shift="0.8">
    <sinanim part="body"             state="attached" type="scale"     axis="x" freq="1.2" amp="0.1" shift="0"   />
    <sinanim part="body"             state="attached" type="scale"     axis="y" freq=".8" amp="0.1" shift="0.5" />
    <sinanim part="body"             state="attached" type="translate" axis="y" freq="1.4" amp="2"   shift="0"   />
 
	<sinanim part="wingLeft" 	state="attached" type="translate" axis="y" freq="20.0" amp="12"   shift="0"   />
    <sinanim part="wingRight" 	state="attached" type="translate" axis="y" freq="22.0" amp="12"   shift="0"   />
 
	<sinanim part="lefteyeStuck,righteyeStuck" state="walking" type="translate" axis="y" freq="1.2" amp="4"   shift="0" />
    <sinanim part="righteyeStuck"         state="walking" type="translate" axis="x" freq="1.2" amp="1" shift="0" />
    <sinanim part="lefteyeStuck"          state="walking" type="translate" axis="x" freq="1.2" amp="1" shift="0.5" />
  </sinvariance>
 
  <!-- walking animations -->
  <sinvariance freq="1.2" amp="0.1" shift="0.0">
    <sinanim part="body"             state="walking" type="scale"     axis="x" freq="2.0" amp="0.1" shift="0"   />
    <sinanim part="body"             state="walking" type="scale"     axis="y" freq="2.0" amp="0.1" shift="0.5" />
    <sinanim part="body"             state="walking" type="translate" axis="y" freq="2.0" amp="2"   shift="0"   />
  </sinvariance>
 
  <!-- falling animations -->
  <sinvariance freq="1" amp="0.02" shift="0.5">
    <sinanim part="body"     state="falling" type="scale"     axis="x" freq="2.0" amp="0.2" shift="0.5" />
    <sinanim part="body"     state="falling" type="scale"     axis="y" freq="2.0" amp="0.2" shift="0.5" />
  </sinvariance>
 
  <!-- dragging animations -->
  <sinvariance freq="0.3" amp="0.03" shift="0">
    <sinanim part="body" state="dragging" type="scale" axis="x" freq="1.0" amp="0.05" shift="0" />
    <sinanim part="body" state="dragging" type="scale" axis="y" freq="1.0" amp="0.05" shift="0" />
  </sinvariance>
 
 
  <!-- Sound FX -->
  <sound event="marker"       id="SOUND_BALL_GENERIC_ROLLOVER1,SOUND_BALL_GENERIC_ROLLOVER2,SOUND_BALL_GENERIC_ROLLOVER3,SOUND_BALL_GENERIC_ROLLOVER4,SOUND_BALL_GENERIC_ROLLOVER5,SOUND_BALL_GENERIC_ROLLOVER6,SOUND_BALL_GENERIC_ROLLOVER7,SOUND_BALL_GENERIC_ROLLOVER8"/>
  <sound event="pickup"       id="SOUND_BALL_FISH_SQUAK1,SOUND_BALL_FISH_SQUAK2,SOUND_BALL_FISH_SQUAK3,SOUND_BALL_FISH_SQUAK4"/>
 
  <sound event="drop"         id="SOUND_BALL_FISH_SQUAK1,SOUND_BALL_FISH_SQUAK2,SOUND_BALL_FISH_SQUAK3,SOUND_BALL_FISH_SQUAK4"/>
  <sound event="throw"        id="SOUND_BALL_FISH_SQUAK1,SOUND_BALL_FISH_SQUAK2,SOUND_BALL_FISH_SQUAK3,SOUND_BALL_FISH_SQUAK4"/>
 
  <sound event="bounce"       id="SOUND_BALL_GENERIC_BOUNCE1,SOUND_BALL_GENERIC_BOUNCE2,SOUND_BALL_GENERIC_BOUNCE3,SOUND_BALL_GENERIC_BOUNCE4"/>
  <sound event="land"         id="SOUND_BALL_GENERIC_STICK1,SOUND_BALL_GENERIC_STICK2,SOUND_BALL_GENERIC_STICK3,SOUND_BALL_GENERIC_STICK4,SOUND_BALL_GENERIC_STICK5,SOUND_BALL_GENERIC_STICK6"/>
 
  <sound event="attach"       id="SOUND_BALL_FISH_WINGFLAP1,SOUND_BALL_FISH_WINGFLAP2,SOUND_BALL_FISH_WINGFLAP3"/>
  <sound event="attachcloser" id="SOUND_BALL_FISH_WINGFLAP1,SOUND_BALL_FISH_WINGFLAP2,SOUND_BALL_FISH_WINGFLAP3"/>
 
  <sound event="snap"         id="SOUND_BALL_GENERIC_SNAP1"/>
 
  <sound event="suction"      id="SOUND_BALL_GENERIC_DETACHED1"/>
  <sound event="exit"         id=""/>
 
 
</ball>