Re: BICHIR
Let's see...
BOZ:
BICHIR (Giant Lungfish)
Large Magical Beast (Aquatic)
Hit Dice: 5d8+5 (27 hp)
Otu:
Bichir (Giant Lungfish)
Large Magical Beast (Aquatic)
Hit Dice: 5d10+15 (42 hp)
Not much of a surprise here. My version is a bit tougher, with more Hit Dice.
BOZ: Initiative: +1 (Dex)
Speed: 15 ft, swim 40 ft
AC: 14 (-1 size, +1 Dex, +4 natural)
Otu:
Initiative: +0
Speed: 20 ft., swim 40 ft.
AC: 14 (-1 size, +5 natural), touch 9, flat-footed 14
Again, quite similar. The speed differences are due to different rounding.
BOZ: Attacks: Bite +7 melee
Damage: Bite 3d4+4
Face/Reach: 5 ft by 10 ft/5 ft
Otu:
Attacks: Bite +8 melee
Damage: Bite 3d4+6
Face/Reach: 5 ft. by 10 ft./5 ft.
Again, not much of a surprise. My version deals somewhat more damage.
BOZ: Special Attacks: Entangle
Special Qualities: SR 17, keen scent, tremorsense
Saves: Fort +5, Ref +5, Will +2
Abilities: Str 17, Dex 13, Con 13, Int 1, Wis 12, Cha 2
Otu:
Special Attacks: Spell-like ability
Special Qualities: Darkvision 60 ft./250 ft.*, scent, SR 14
Saves: Fort +7, Ref +4, Will +2
Abilities: Str 18, Dex 11, Con 16, Int 1, Wis 12, Cha 9
Getting interesting here. I was more generous with ability scores, while you gave more effective Special Qualities.
BOZ: Skills: Hide +6, Spot +6
Feats: Alertness
Otu:
Skills: Hide -4*, Listen +5, Spot +6*
Feats: Alertness
A bit surprised about the Hide skill modifier... did you assume that it would be only found in water?
BOZ: Climate/Terrain: Any marsh
Organization: Solitary or school (1-4)
Challenge Rating: 4
Treasure: Standard
Alignment: Always neutral
Advancement: 6-10 HD (Large); 11-15 HD (Huge)
Otu:
Climate/Terrain: Temperate and warm marshs
Organization: Solitary or school (1-4)
Challenge Rating: 3
Treasure: None
Alignment: Always neutral
Advancement: 6 - 10 HD (Large); 11 - 15 HD (Huge)
Interestingly, my version is more dangerous, but has a lower CR. Other than that and the treasure, nit much of a surprise.
Since there is not much point to compare the different special abilities...
BOZ: Skills: The bichir receives a +4 racial bonus to Hide checks in any marsh. Their sensitive eyes also provide them with a +4 racial bonus to Spot checks when in water.
Otu:
Skills: *A bichir receives a +8 racial bonus to Hide checks in its natural surroundings. It receives a +8 racial bonus to Spot checks underwater.
Again, I was more generous with the skill bonuses.