Add finished creature artwork

docs/ATTRIBUTION.md

@@ -12,14 +12,14 @@ publicly credited as Voyager and Endeavour and operating collectively as the
 independent team Woofmeow.
 
 - Voyager: co-owner, developer, project director, creator of the game's
-  current provisional fish artwork and original 3D work except where another
-  creator is credited, and composer of the original title track
+  provisional fish placeholder artwork and original 3D work except where
+  another creator is credited, and composer of the original title track
   `audio/music/title/as_in_four_wolves.ogg`, dusk/world track
   `audio/music/world/craft.mp3`, and the synthesized robot animalese tones.
 - Endeavour: co-owner, developer, and 2D artist. Her incorporated work includes
-  character pattern/channel-map art, environment and UI art, and item art.
-  Planned work is not described as incorporated until its files enter the
-  project.
+  character pattern/channel-map art, environment and UI art, item art, and
+  finished fish and creature artwork. Planned work is not described as
+  incorporated until its files enter the project.
 - chillnfill: contributor of original 3D models for the character bodies and
   arms, ears and tails, and multiple world props and decorative assets,
   including trees and bridges. The contributor requested to be credited as
@@ -132,17 +132,18 @@ locations only and must never appear in scenes or resources.
 
 ## Project-created artwork and music
 
-The current in-game fish images are provisional artwork by Voyager. Endeavour
-is creating replacement fish artwork, but work that has not been incorporated
-into this repository is not presented here as part of the game or attributed
-as a shipped asset.
+Fish entries without finished replacement artwork use provisional placeholder
+artwork by Voyager. Incorporated finished fish and creature artwork is by
+Endeavour; work that has not entered this repository is not presented here as
+part of the game or attributed as a shipped asset.
 
 Endeavour's incorporated 2D contributions include the inventory notepad,
-environment and UI artwork, item artwork, and character customization pattern
-and channel-map artwork. Voyager's incorporated original work includes 3D
-assets, the provisional fish artwork, the title and dusk music identified
-above, and the robot animalese tones. Specific contributor exceptions are
-recorded below and in the in-game credits.
+environment and UI artwork, item artwork, finished fish and creature artwork,
+and character customization pattern and channel-map artwork. Voyager's
+incorporated original work includes 3D assets, the provisional fish
+placeholder artwork, the title and dusk music identified above, and the robot
+animalese tones. Specific contributor exceptions are recorded below and in the
+in-game credits.
 
 These credits intentionally describe work by creator and contribution family
 instead of maintaining a second file-by-file asset catalog. Runtime resources
@@ -192,9 +193,10 @@ https://creativecommons.org/licenses/by/3.0/legalcode.
 ### Endeavour 2D contribution record
 
 Endeavour created the incorporated character customization patterns and
-channel maps as well as additional UI, environment, and item artwork. The
-current provisional fish artwork is not part of this credit. New or replacement
-art is added to this record only after it is accepted into the repository.
+channel maps as well as additional UI, environment, item, fish, and creature
+artwork. Voyager's provisional fish placeholder is not part of this credit.
+New or replacement art is added to this record only after it is accepted into
+the repository.
 
 The exact current filenames and bytes are intentionally not copied into this
 document. The character appearance resources and Git history are the