diff --git a/plugin/src/main/java/net/momirealms/customfishing/mechanic/item/ItemManagerImpl.java b/plugin/src/main/java/net/momirealms/customfishing/mechanic/item/ItemManagerImpl.java
index 161dcc64..5732a947 100644
--- a/plugin/src/main/java/net/momirealms/customfishing/mechanic/item/ItemManagerImpl.java
+++ b/plugin/src/main/java/net/momirealms/customfishing/mechanic/item/ItemManagerImpl.java
@@ -709,7 +709,7 @@ public class ItemManagerImpl implements ItemManager, Listener {
                 if (bonus != 0) {
                     placeholders.put("{bonus}", String.format("%.2f", bonus));
                 }
-                float size = Float.parseFloat(placeholders.getOrDefault("{size}", "0").replace(",", "."));
+                float size = Float.parseFloat(placeholders.getOrDefault("{SIZE}", "0"));
                 double price = CustomFishingPlugin.get().getMarketManager().getFishPrice(
                         base,
                         bonus,
@@ -717,6 +717,7 @@ public class ItemManagerImpl implements ItemManager, Listener {
                 );
                 nbtItem.setDouble("Price", price);
                 placeholders.put("{price}", String.format("%.2f", price));
+                placeholders.put("{PRICE}", String.valueOf(price));
             });
             return this;
         }
@@ -731,8 +732,16 @@ public class ItemManagerImpl implements ItemManager, Listener {
                 double fixed = Double.parseDouble(placeholders.getOrDefault("{size-fixed}", "0.0"));
                 random *= bonus;
                 random += fixed;
+                if (CFConfig.restrictedSizeRange) {
+                    if (random > size.right()) {
+                        random = size.right();
+                    } else if (random < size.left()) {
+                        random = size.left();
+                    }
+                }
                 cfCompound.setFloat("size", random);
                 placeholders.put("{size}", String.format("%.2f", random));
+                placeholders.put("{SIZE}", String.valueOf(random));
             });
             return this;
         }
diff --git a/plugin/src/main/java/net/momirealms/customfishing/setting/CFConfig.java b/plugin/src/main/java/net/momirealms/customfishing/setting/CFConfig.java
index 90b65806..f883badb 100644
--- a/plugin/src/main/java/net/momirealms/customfishing/setting/CFConfig.java
+++ b/plugin/src/main/java/net/momirealms/customfishing/setting/CFConfig.java
@@ -40,7 +40,7 @@ import java.util.Objects;
 public class CFConfig {
 
     // config version
-    public static String configVersion = "30";
+    public static String configVersion = "31";
     // Debug mode
     public static boolean debug;
     // language
@@ -88,6 +88,10 @@ public class CFConfig {
     // Lock data on join
     public static boolean lockData;
 
+    public static boolean restrictedSizeRange;
+    public static boolean allowSizeStack;
+    public static List<String> sizeStackLore;
+
     // Legacy color code support
     public static boolean legacyColorSupport;
     // Durability lore
@@ -151,6 +155,10 @@ public class CFConfig {
         lavaMinTime = config.getInt("mechanics.lava-fishing.min-wait-time", 100);
         lavaMaxTime = config.getInt("mechanics.lava-fishing.max-wait-time", 600);
 
+        restrictedSizeRange = config.getBoolean("mechanics.size.restricted-size-range", true);
+        allowSizeStack = config.getBoolean("mechanics.size.allow-stack", false);
+        sizeStackLore = config.getStringList("mechanics.size.lore-format").stream().map(it -> "<!i>" + it).toList();
+
         globalShowInFinder = config.getBoolean("mechanics.global-loot-property.show-in-fishfinder", true);
         globalDisableStats = config.getBoolean("mechanics.global-loot-property.disable-stat", false);
         globalDisableGame = config.getBoolean("mechanics.global-loot-property.disable-game", false);
diff --git a/plugin/src/main/resources/config.yml b/plugin/src/main/resources/config.yml
index 464ef7ca..17a53a84 100644
--- a/plugin/src/main/resources/config.yml
+++ b/plugin/src/main/resources/config.yml
@@ -1,6 +1,6 @@
 # Developer: @Xiao-MoMi
 # Wiki: https://mo-mi.gitbook.io/xiaomomi-plugins/
-config-version: '30'
+config-version: '31'
 
 # Debug
 debug: false
@@ -147,6 +147,24 @@ mechanics:
     min-wait-time: 100
     max-wait-time: 600
 
+  # Size settings
+  size:
+    # Some effects would increase/decrease size so the option decides whether they could ignore the limit
+    restricted-size-range: true
+
+    ###### WARNING: THIS IS NOT AN IMPLEMENTED FEATURE AND MIGHT BE REMOVED IN THE FUTURE ######
+    # It's only available for developers to test for the moment.
+    # This feature requires much work on preventing dupe, counting price, merging dropped items,
+    # clicks in inventory, hopper transferring and lore updating...
+    # It might be removed if dupes or has bad performance.
+    ## Allow players to stack fish with different sizes
+    #allow-stack: false
+    ## Lore format
+    #lore-format:
+    #  - ''
+    #  - 'Total Size: {0}cm'
+    #############################################################################################
+
   # Competition settings
   competition:
     # Use redis for cross server data synchronization
diff --git a/plugin/src/main/resources/market.yml b/plugin/src/main/resources/market.yml
index d420be6b..b4fbb5d2 100644
--- a/plugin/src/main/resources/market.yml
+++ b/plugin/src/main/resources/market.yml
@@ -1,8 +1,8 @@
+enable: true
+
 # Container title
 title: '<gradient:#A52A2A:#800000:#A52A2A>Fish Market</gradient>'
 
-enable: true
-
 limitation:
   enable: true
   # Support expression and placeholders